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99-402: A fossil (from Classical Latin fossilis , lit.   ' obtained by digging ' ) is any preserved remains, impression, or trace of any once-living thing from a past geological age . Examples include bones , shells , exoskeletons , stone imprints of animals or microbes , objects preserved in amber , hair , petrified wood and DNA remnants. The totality of fossils is known as

198-478: A certain sense, therefore, Latin was studied as a dead language, while it was still a living." Also problematic in Teuffel's scheme is its appropriateness to the concept of classical Latin. Cruttwell addresses the issue by altering the concept of the classical. The "best" Latin is defined as "golden" Latin, the second of the three periods. The other two periods (considered "classical") are left hanging. By assigning

297-470: A constant rate. These " molecular clocks ", however, are fallible, and provide only approximate timing: for example, they are not sufficiently precise and reliable for estimating when the groups that feature in the Cambrian explosion first evolved, and estimates produced by different techniques may vary by a factor of two. Organisms are only rarely preserved as fossils in the best of circumstances, and only

396-433: A detailed analysis of style, whereas Teuffel was more concerned with history. Like Teuffel, Cruttwell encountered issues while attempting to condense the voluminous details of time periods in an effort to capture the meaning of phases found in their various writing styles. Like Teuffel, he has trouble finding a name for the first of the three periods (the current Old Latin phase), calling it "from Livius to Sulla ." He says

495-471: A form of Greek that was considered model. Before then, the term classis , in addition to being a naval fleet, was a social class in one of the diachronic divisions of Roman society in accordance with property ownership under the Roman constitution. The word is a transliteration of Greek κλῆσις (clēsis, or "calling") used to rank army draftees by property from first to fifth class. Classicus refers to those in

594-425: A fraction of such fossils have been discovered. This is illustrated by the fact that the number of species known through the fossil record is less than 5% of the number of known living species, suggesting that the number of species known through fossils must be far less than 1% of all the species that have ever lived. Because of the specialized and rare circumstances required for a biological structure to fossilize, only

693-499: A hierarchical classification system still in use today. Darwin and his contemporaries first linked the hierarchical structure of the tree of life with the then very sparse fossil record. Darwin eloquently described a process of descent with modification, or evolution, whereby organisms either adapt to natural and changing environmental pressures, or they perish. When Darwin wrote On the Origin of Species by Means of Natural Selection, or

792-534: A mutation first appeared. Phylogenetics and paleontology work together in the clarification of science's still dim view of the appearance of life and its evolution. Niles Eldredge 's study of the Phacops trilobite genus supported the hypothesis that modifications to the arrangement of the trilobite's eye lenses proceeded by fits and starts over millions of years during the Devonian . Eldredge's interpretation of

891-407: A phase of styles. The ancient authors themselves first defined style by recognizing different kinds of sermo , or "speech". By valuing Classical Latin as "first class", it was better to write with Latinitas selected by authors who were attuned to literary and upper-class languages of the city as a standardized style. All sermo that differed from it was a different style. Thus, in rhetoric, Cicero

990-570: A portion of the deceased organism, usually that portion that was partially mineralized during life, such as the bones and teeth of vertebrates , or the chitinous or calcareous exoskeletons of invertebrates . Fossils may also consist of the marks left behind by the organism while it was alive, such as animal tracks or feces ( coprolites ). These types of fossil are called trace fossils or ichnofossils , as opposed to body fossils . Some fossils are biochemical and are called chemofossils or biosignatures . Gathering fossils dates at least to

1089-400: A richly diverse assembly of early multicellular eukaryotes . The fossil record and faunal succession form the basis of the science of biostratigraphy or determining the age of rocks based on embedded fossils. For the first 150 years of geology , biostratigraphy and superposition were the only means for determining the relative age of rocks. The geologic time scale was developed based on

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1188-446: A short time range to be useful. Misleading results are produced if the index fossils are incorrectly dated. Stratigraphy and biostratigraphy can in general provide only relative dating ( A was before B ), which is often sufficient for studying evolution. However, this is difficult for some time periods, because of the problems involved in matching rocks of the same age across continents . Family-tree relationships also help to narrow down

1287-534: A slight alteration in approach, making it clear that his terms applied to Latin and not just to the period. He also changed his dating scheme from AUC to modern BC/AD. Though he introduces das silberne Zeitalter der römischen Literatur , (The Silver Age of Roman Literature) from the death of Augustus to the death of Trajan (14–117 AD), he also mentions parts of a work by Seneca the Elder , a wenig Einfluss der silbernen Latinität (a slight influence of silver Latin). It

1386-446: A small percentage of life-forms can be expected to be represented in discoveries, and each discovery represents only a snapshot of the process of evolution. The transition itself can only be illustrated and corroborated by transitional fossils, which will never demonstrate an exact half-way point. The fossil record is strongly biased toward organisms with hard-parts, leaving most groups of soft-bodied organisms with little to no role. It

1485-729: Is Cruttwell's Augustan Epoch (42 BC – 14 AD). The literary histories list includes all authors from Canonical to the Ciceronian Age—even those whose works are fragmented or missing altogether. With the exception of a few major writers, such as Cicero, Caesar, Virgil and Catullus, ancient accounts of Republican literature praise jurists and orators whose writings, and analyses of various styles of language cannot be verified because there are no surviving records. The reputations of Aquilius Gallus, Quintus Hortensius Hortalus , Lucius Licinius Lucullus , and many others who gained notoriety without readable works, are presumed by their association within

1584-447: Is a notable example of how knowledge encoded by the fossil record continues to contribute otherwise unattainable information on the emergence and development of life on Earth. For example, the research suggests Markuelia has closest affinity to priapulid worms, and is adjacent to the evolutionary branching of Priapulida , Nematoda and Arthropoda . Despite significant advances in uncovering and identifying paleontological specimens, it

1683-443: Is clear that his mindset had shifted from Golden and Silver Ages to Golden and Silver Latin, also to include Latinitas , which at this point must be interpreted as Classical Latin. He may have been influenced in that regard by one of his sources E. Opitz, who in 1852 had published specimen lexilogiae argenteae latinitatis , which includes Silver Latinity. Though Teuffel's First Period was equivalent to Old Latin and his Second Period

1782-468: Is generally accepted that the fossil record is vastly incomplete. Approaches for measuring the completeness of the fossil record have been developed for numerous subsets of species, including those grouped taxonomically, temporally, environmentally/geographically, or in sum. This encompasses the subfield of taphonomy and the study of biases in the paleontological record. Paleontology seeks to map out how life evolved across geologic time. A substantial hurdle

1881-607: Is known as "classical" Latin literature . The term refers to the canonical relevance of literary works written in Latin in the late Roman Republic , and early to middle Roman Empire . "[T]hat is to say, that of belonging to an exclusive group of authors (or works) that were considered to be emblematic of a certain genre." The term classicus (masculine plural classici ) was devised by the Romans to translate Greek ἐγκριθέντες (encrithentes), and "select" which refers to authors who wrote in

1980-473: Is not that of the golden age... Evidently, Teuffel received ideas about golden and silver Latin from an existing tradition and embedded them in a new system, transforming them as he thought best. In Cruttwell's introduction, the Golden Age is dated 80 BC – AD 14 (from Cicero to Ovid ), which corresponds to Teuffel's findings. Of the "Second Period", Cruttwell paraphrases Teuffel by saying it "represents

2079-437: Is replete with the mollusks , the vertebrates , the echinoderms , the brachiopods and some groups of arthropods . Fossil sites with exceptional preservation—sometimes including preserved soft tissues—are known as Lagerstätten —German for "storage places". These formations may have resulted from carcass burial in an anoxic environment with minimal bacteria, thus slowing decomposition. Lagerstätten span geological time from

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2178-601: Is that period in which the climax was reached in the perfection of form, and in most respects also in the methodical treatment of the subject-matters. It may be subdivided between the generations, in the first of which (the Ciceronian Age) prose culminated, while poetry was principally developed in the Augustan Age. The Ciceronian Age was dated 671–711 AUC (83–43 BC), ending just after the death of Marcus Tullius Cicero. The Augustan 711–67 AUC (43 BC – 14 AD) ends with

2277-469: Is the difficulty of working out fossil ages. Beds that preserve fossils typically lack the radioactive elements needed for radiometric dating . This technique is our only means of giving rocks greater than about 50 million years old an absolute age, and can be accurate to within 0.5% or better. Although radiometric dating requires careful laboratory work, its basic principle is simple: the rates at which various radioactive elements decay are known, and so

2376-587: Is the first known reference (possibly innovated during this time) to Classical Latin applied by authors, evidenced in the authentic language of their works. Imitating Greek grammarians, Romans such as Quintilian drew up lists termed indices or ordines modeled after the ones created by the Greeks, which were called pinakes . The Greek lists were considered classical, or recepti scriptores ("select writers"). Aulus Gellius includes authors like Plautus , who are considered writers of Old Latin and not strictly in

2475-567: Is the form of Literary Latin recognized as a literary standard by writers of the late Roman Republic and early Roman Empire . It formed parallel to Vulgar Latin around 75 BC out of Old Latin , and developed by the 3rd century AD into Late Latin . In some later periods, the former was regarded as good or proper Latin; the latter as debased, degenerate, or corrupted. The word Latin is now understood by default to mean "Classical Latin"; for example, modern Latin textbooks almost exclusively teach Classical Latin. Cicero and his contemporaries of

2574-411: Is the science of deciphering the "layer-cake" that is the sedimentary record. Rocks normally form relatively horizontal layers, with each layer younger than the one underneath it. If a fossil is found between two layers whose ages are known, the fossil's age is claimed to lie between the two known ages. Because rock sequences are not continuous, but may be broken up by faults or periods of erosion , it

2673-474: Is to be distinguished by: until 75 BC Old Latin 75 BC – 200 AD Classical Latin 200–700 Late Latin 700–1500 Medieval Latin 1300–1500 Renaissance Latin 1300– present Neo-Latin 1900– present Contemporary Latin Sopdu As a sky god, Sopdu was connected with the god Sah , the personification of the constellation Orion , and the goddess Sopdet , representing

2772-565: Is very difficult to match up rock beds that are not directly adjacent. However, fossils of species that survived for a relatively short time can be used to match isolated rocks: this technique is called biostratigraphy . For instance, the conodont Eoplacognathus pseudoplanus has a short range in the Middle Ordovician period. If rocks of unknown age have traces of E. pseudoplanus , they have a mid-Ordovician age. Such index fossils must be distinctive, be globally distributed and occupy

2871-466: The 3rd person plural suffix (a quail ); thus a literal translation of his name is sharp ones . He was said, in the Pyramid Texts, to protect the teeth of the deceased pharaoh. Sopdu was depicted as a falcon sitting on a religious standard, often with a two-feathered crown on his head and a flail over his shoulder. In his border-guarding role he was shown as a Near Eastern warrior, with

2970-619: The Antonines ), and the 3rd through 6th centuries. Of the Silver Age proper, Teuffel points out that anything like freedom of speech had vanished with Tiberius : ...the continual apprehension in which men lived caused a restless versatility... Simple or natural composition was considered insipid; the aim of language was to be brilliant... Hence it was dressed up with abundant tinsel of epigrams, rhetorical figures and poetical terms... Mannerism supplanted style, and bombastic pathos took

3069-800: The Cambrian period to the present . Worldwide, some of the best examples of near-perfect fossilization are the Cambrian Maotianshan Shales and Burgess Shale , the Devonian Hunsrück Slates , the Jurassic Solnhofen Limestone , and the Carboniferous Mazon Creek localities. A fossil is said to be recrystallized when the original skeletal compounds are still present but in a different crystal form, such as from aragonite to calcite . Replacement occurs when

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3168-586: The Phacops fossil record was that the aftermaths of the lens changes, but not the rapidly occurring evolutionary process, were fossilized. This and other data led Stephen Jay Gould and Niles Eldredge to publish their seminal paper on punctuated equilibrium in 1971. Synchrotron X-ray tomographic analysis of early Cambrian bilaterian embryonic microfossils yielded new insights of metazoan evolution at its earliest stages. The tomography technique provides previously unattainable three-dimensional resolution at

3267-567: The Renaissance . Leonardo da Vinci concurred with Aristotle's view that fossils were the remains of ancient life. For example, Leonardo noticed discrepancies with the biblical flood narrative as an explanation for fossil origins: If the Deluge had carried the shells for distances of three and four hundred miles from the sea it would have carried them mixed with various other natural objects all heaped up together; but even at such distances from

3366-599: The Song dynasty during the 11th century, who kept a specific seashell fossil with his own poem engraved on it. In his Dream Pool Essays published in 1088, Song dynasty Chinese scholar-official Shen Kuo hypothesized that marine fossils found in a geological stratum of mountains located hundreds of miles from the Pacific Ocean was evidence that a prehistoric seashore had once existed there and shifted over centuries of time . His observation of petrified bamboos in

3465-483: The classici scriptores declined in the medieval period as the best form of the language yielded to medieval Latin , inferior to classical standards. The Renaissance saw a revival in Roman culture, and with it, the return of Classic ("the best") Latin. Thomas Sébillet 's Art Poétique (1548), "les bons et classiques poètes françois", refers to Jean de Meun and Alain Chartier , who the first modern application of

3564-635: The fossil record . Though the fossil record is incomplete, numerous studies have demonstrated that there is enough information available to give a good understanding of the pattern of diversification of life on Earth. In addition, the record can predict and fill gaps such as the discovery of Tiktaalik in the arctic of Canada . Paleontology includes the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years to 4.1 billion years old. The observation in

3663-402: The law of superposition ) preserved different assemblages of fossils, and that these assemblages succeeded one another in a regular and determinable order. He observed that rocks from distant locations could be correlated based on the fossils they contained. He termed this the principle of faunal succession . This principle became one of Darwin's chief pieces of evidence that biological evolution

3762-466: The prima classis ("first class"), such as the authors of polished works of Latinitas , or sermo urbanus . It contains nuances of the certified and the authentic, or testis classicus ("reliable witness"). It was under this construct that Marcus Cornelius Fronto (an African - Roman lawyer and language teacher) used scriptores classici ("first-class" or "reliable authors") in the second century AD. Their works were viewed as models of good Latin. This

3861-401: The thunderbird . There is no such direct mythological connection known from prehistoric Africa, but there is considerable evidence of tribes there excavating and moving fossils to ceremonial sites, apparently treating them with some reverence. In Japan, fossil shark teeth were associated with the mythical tengu , thought to be the razor-sharp claws of the creature, documented some time after

3960-399: The 16th century. Roman naturalist Pliny the Elder wrote of " tongue stones ", which he called glossopetra . These were fossil shark teeth, thought by some classical cultures to look like the tongues of people or snakes. He also wrote about the horns of Ammon , which are fossil ammonites , whence the group of shelled octopus-cousins ultimately draws its modern name. Pliny also makes one of

4059-738: The 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ages of rocks and the fossils they host. There are many processes that lead to fossilization , including permineralization , casts and molds, authigenic mineralization , replacement and recrystallization, adpression, carbonization , and bioimmuration. Fossils vary in size from one- micrometre (1 μm) bacteria to dinosaurs and trees, many meters long and weighing many tons. A fossil normally preserves only

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4158-412: The 8th century AD. In medieval China, the fossil bones of ancient mammals including Homo erectus were often mistaken for " dragon bones" and used as medicine and aphrodisiacs . In addition, some of these fossil bones are collected as "art" by scholars, who left scripts on various artifacts, indicating the time they were added to a collection. One good example is the famous scholar Huang Tingjian of

4257-605: The Classical Latin period formed the model for the language taught and used in later periods across Europe and beyond. While the Latin used in different periods deviated from "Classical" Latin, efforts were periodically made to relearn and reapply the models of the Classical period, for instance by Alcuin during the reign of Charlemagne , and later during the Renaissance , producing the highly classicising form of Latin now known as Neo-Latin . "Good Latin" in philology

4356-463: The English translation of A History of Roman Literature gained immediate success. In 1877, Charles Thomas Cruttwell produced a similar work in English. In his preface, Cruttwell notes "Teuffel's admirable history, without which many chapters in the present work could not have attained completeness." He also credits Wagner. Cruttwell adopts the time periods found in Teuffel's work, but he presents

4455-421: The Golden Age. A list of canonical authors of the period whose works survived in whole or in part is shown here: The Golden Age is divided by the assassination of Julius Caesar . In the wars that followed, a generation of Republican literary figures was lost. Cicero and his contemporaries were replaced by a new generation who spent their formative years under the old constructs, and forced to make their mark under

4554-602: The Imperial Period, and is divided into die Zeit der julischen Dynastie ( 14–68); die Zeit der flavischen Dynastie (69–96), and die Zeit des Nerva und Trajan (96–117). Subsequently, Teuffel goes over to a century scheme: 2nd, 3rd, etc., through 6th. His later editions (which came about towards the end of the 19th century) divide the Imperial Age into parts: 1st century (Silver Age), 2nd century (the Hadrian and

4653-615: The Preservation of Favoured Races in the Struggle for Life , the oldest animal fossils were those from the Cambrian Period, now known to be about 540 million years old. He worried about the absence of older fossils because of the implications on the validity of his theories, but he expressed hope that such fossils would be found, noting that: "only a small portion of the world is known with accuracy." Darwin also pondered

4752-565: The Proterozoic and deeper still in the Archean is only "recounted by microscopic fossils and subtle chemical signals." Molecular biologists, using phylogenetics , can compare protein amino acid or nucleotide sequence homology (i.e., similarity) to evaluate taxonomy and evolutionary distances among organisms, with limited statistical confidence. The study of fossils, on the other hand, can more specifically pinpoint when and in what organism

4851-492: The Roman Empire . Once again, Cruttwell evidences some unease with his stock pronouncements: "The Natural History of Pliny shows how much remained to be done in fields of great interest." The idea of Pliny as a model is not consistent with any sort of decline. Moreover, Pliny did his best work under emperors who were as tolerant as Augustus had been. To include some of the best writings of the Silver Age, Cruttwell extended

4950-474: The Second Period in his major work, das goldene Zeitalter der römischen Literatur ( Golden Age of Roman Literature ), dated 671–767 AUC (83 BC – AD 14), according to his own recollection. The timeframe is marked by the dictatorship of Lucius Cornelius Sulla Felix and the death of the emperor Augustus . Wagner's translation of Teuffel's writing is as follows: The golden age of the Roman literature

5049-430: The advance would be perceptible by us." In time, some of Cruttwell's ideas become established in Latin philology. While praising the application of rules to classical Latin (most intensely in the Golden Age, he says "In gaining accuracy, however, classical Latin suffered a grievous loss. It became cultivated as distinct from a natural language... Spontaneity, therefore, became impossible and soon invention also ceased... In

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5148-399: The ancient definition, and some of the very best writing of any period in world history was deemed stilted, degenerate, unnatural language. The Silver Age furnishes the only two extant Latin novels: Apuleius's The Golden Ass and Petronius's Satyricon . Writers of the Silver Age include: Of the additional century granted by Cruttwell to Silver Latin, Teuffel says: "The second century

5247-412: The beach, indicating the fossils were once living animals. He had previously explained them in terms of vaporous exhalations , which Persian polymath Avicenna modified into the theory of petrifying fluids ( succus lapidificatus ). Recognition of fossil seashells as originating in the sea was built upon in the 14th century by Albert of Saxony , and accepted in some form by most naturalists by

5346-714: The beginning of recorded history. The fossils themselves are referred to as the fossil record. The fossil record was one of the early sources of data underlying the study of evolution and continues to be relevant to the history of life on Earth . Paleontologists examine the fossil record to understand the process of evolution and the way particular species have evolved. Fossils have been visible and common throughout most of natural history, and so documented human interaction with them goes back as far as recorded history, or earlier. There are many examples of paleolithic stone knives in Europe, with fossil echinoderms set precisely at

5445-416: The date when lineages first appeared. For instance, if fossils of B or C date to X million years ago and the calculated "family tree" says A was an ancestor of B and C, then A must have evolved earlier. It is also possible to estimate how long ago two living clades diverged, in other words approximately how long ago their last common ancestor must have lived, by assuming that DNA mutations accumulate at

5544-474: The death of Augustus. The Ciceronian Age is further divided by the consulship of Cicero in 691 AUC (63 BC) into a first and second half. Authors are assigned to these periods by years of principal achievements. The Golden Age had already made an appearance in German philology, but in a less systematic way. In a translation of Bielfeld's Elements of universal erudition (1770): The Second Age of Latin began about

5643-617: The deity Sopdu , the Morning Star, equivalent of Venus in Roman mythology. Fossils appear to have directly contributed to the mythology of many civilizations, including the ancient Greeks. Classical Greek historian Herodotos wrote of an area near Hyperborea where gryphons protected golden treasure. There was indeed gold mining in that approximate region , where beaked Protoceratops skulls were common as fossils. A later Greek scholar, Aristotle , eventually realized that fossil seashells from rocks were similar to those found on

5742-463: The dry northern climate zone of what is now Yan'an , Shaanxi province, China, led him to advance early ideas of gradual climate change due to bamboo naturally growing in wetter climate areas. In medieval Christendom , fossilized sea creatures on mountainsides were seen as proof of the biblical deluge of Noah's Ark . After observing the existence of seashells in mountains, the ancient Greek philosopher Xenophanes (c. 570 – 478 BC) speculated that

5841-414: The earlier known references to toadstones , thought until the 18th century to be a magical cure for poison originating in the heads of toads, but which are fossil teeth from Lepidotes , a Cretaceous ray-finned fish. The Plains tribes of North America are thought to have similarly associated fossils, such as the many intact pterosaur fossils naturally exposed in the region, with their own mythology of

5940-549: The earliest known stromatolites are over 3.4 billion years old. The fossil record is life's evolutionary epic that unfolded over four billion years as environmental conditions and genetic potential interacted in accordance with natural selection. The Virtual Fossil Museum Paleontology has joined with evolutionary biology to share the interdisciplinary task of outlining the tree of life, which inevitably leads backwards in time to Precambrian microscopic life when cell structure and functions evolved. Earth's deep time in

6039-463: The earth during earthquake and subsidences, and petrifies whatever comes into contact with it. As a matter of fact, the petrifaction of the bodies of plants and animals is not more extraordinary than the transformation of waters. From the 13th century to the present day, scholars pointed out that the fossil skulls of Deinotherium giganteum , found in Crete and Greece, might have been interpreted as being

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6138-470: The easternmost nome of Lower Egypt , which was named Per-Sopdu , meaning place of Sopdu . He also had shrines at Egyptian settlements in the Sinai Peninsula , such as the turquoise mines at Serabit el-Khadim . B C D F G H I K M N P Q R S T U W Sopdu's name is composed of the hieroglyph for sharp , a pointed triangle , and

6237-476: The existence of a world previous to ours, destroyed by some kind of catastrophe. Interest in fossils, and geology more generally, expanded during the early nineteenth century. In Britain, Mary Anning 's discoveries of fossils, including the first complete ichthyosaur and a complete plesiosaurus skeleton, sparked both public and scholarly interest. Early naturalists well understood the similarities and differences of living species leading Linnaeus to develop

6336-443: The extinction of freedom... Hence arose a declamatory tone, which strove by frigid and almost hysterical exaggeration to make up for the healthy stimulus afforded by daily contact with affairs. The vein of artificial rhetoric, antithesis and epigram... owes its origin to this forced contentment with an uncongenial sphere. With the decay of freedom, taste sank... In Cruttwell's view (which had not been expressed by Teuffel), Silver Latin

6435-422: The fundamental characteristics of a language. The latter provides unity, allowing it to be referred to by a single name. Thus Old Latin, Classical Latin, Vulgar Latin , etc., are not considered different languages, but are all referred to by the term, Latin . This is an ancient practice continued by moderns rather than a philological innovation of recent times. That Latin had case endings is a fundamental feature of

6534-618: The good families"), sermo urbanus ("speech of the city"), and in rare cases sermo nobilis ("noble speech"). Besides the noun Latinitas , it was referred to with the adverb latine ("in (good) Latin", literally "Latinly") or its comparative latinius ("in better Latin", literally "more Latinly"). Latinitas was spoken and written. It was the language taught in schools. Prescriptive rules therefore applied to it, and when special subjects like poetry or rhetoric were taken into consideration, additional rules applied. Since spoken Latinitas has become extinct (in favor of subsequent registers),

6633-517: The hand grip, dating back to Homo heidelbergensis and Neanderthals . These ancient peoples also drilled holes through the center of those round fossil shells, apparently using them as beads for necklaces. The ancient Egyptians gathered fossils of species that resembled the bones of modern species they worshipped. The god Set was associated with the hippopotamus , therefore fossilized bones of hippo-like species were kept in that deity's temples. Five-rayed fossil sea urchin shells were associated with

6732-579: The highest excellence in prose and poetry." The Ciceronian Age (known today as the "Republican Period") is dated 80–42 BC, marked by the Battle of Philippi . Cruttwell omits the first half of Teuffel's Ciceronian, and starts the Golden Age at Cicero's consulship in 63 BC—an error perpetuated in Cruttwell's second edition. He likely meant 80 BC, as he includes Varro in Golden Latin. Teuffel's Augustan Age

6831-457: The language "is marked by immaturity of art and language, by a vigorous but ill-disciplined imitation of Greek poetical models, and in prose by a dry sententiousness of style, gradually giving way to a clear and fluent strength..." These abstracts have little meaning to those not well-versed in Latin literature. In fact, Cruttwell admits "The ancients, indeed, saw a difference between Ennius , Pacuvius , and Accius , but it may be questioned whether

6930-511: The language. Whether a given form of speech prefers to use prepositions such as ad , ex , de, for "to", "from" and "of" rather than simple case endings is a matter of style. Latin has a large number of styles. Each and every author has a style, which typically allows his prose or poetry to be identified by experienced Latinists. Problems in comparative literature have risen out of group styles finding similarity by period, in which case one may speak of Old Latin, Silver Latin, Late Latin as styles or

7029-416: The late republic referred to the Latin language, in contrast to other languages such as Greek, as lingua latina or sermo latinus . They distinguished the common vernacular , however, as Vulgar Latin ( sermo vulgaris and sermo vulgi ), in contrast to the higher register that they called latinitas , sometimes translated as "Latinity". Latinitas was also called sermo familiaris ("speech of

7128-534: The limits of fossilization. Fossils of two enigmatic bilaterians, the worm-like Markuelia and a putative, primitive protostome , Pseudooides , provide a peek at germ layer embryonic development. These 543-million-year-old embryos support the emergence of some aspects of arthropod development earlier than previously thought in the late Proterozoic. The preserved embryos from China and Siberia underwent rapid diagenetic phosphatization resulting in exquisite preservation, including cell structures. This research

7227-448: The other, would savour of artificial restriction rather than that of a natural classification." The contradiction remains—Terence is, and is not a classical author, depending on the context. Teuffel's definition of the "First Period" of Latin was based on inscriptions, fragments, and the literary works of the earliest known authors. Though he does use the term "Old Roman" at one point, most of these findings remain unnamed. Teuffel presents

7326-562: The period of classical Latin. The classical Romans distinguished Old Latin as prisca Latinitas and not sermo vulgaris . Each author's work in the Roman lists was considered equivalent to one in the Greek. In example, Ennius was the Latin Homer , Aeneid was the equivalent of Iliad , etc. The lists of classical authors were as far as the Roman grammarians went in developing a philology . The topic remained at that point while interest in

7425-410: The period through the death of Marcus Aurelius (180 AD). The philosophic prose of a good emperor was in no way compatible with either Teuffel's view of unnatural language, or Cruttwell's depiction of a decline. Having created these constructs, the two philologists found they could not entirely justify them. Apparently, in the worst implication of their views, there was no such thing as Classical Latin by

7524-583: The philological notion of classical Latin through a typology similar to the Ages of Man , setting out the Golden and Silver Ages of classical Latin. Wilhem Wagner, who published Teuffel's work in German, also produced an English translation which he published in 1873. Teuffel's classification, still in use today (with modifications), groups classical Latin authors into periods defined by political events rather than by style. Teuffel went on to publish other editions, but

7623-419: The place of quiet power. The content of new literary works was continually proscribed by the emperor, who exiled or executed existing authors and played the role of literary man, himself (typically badly). Artists therefore went into a repertory of new and dazzling mannerisms, which Teuffel calls "utter unreality." Cruttwell picks up this theme: The foremost of these [characteristics] is unreality, arising from

7722-442: The ratio of the radioactive element to its decay products shows how long ago the radioactive element was incorporated into the rock. Radioactive elements are common only in rocks with a volcanic origin, and so the only fossil-bearing rocks that can be dated radiometrically are volcanic ash layers, which may provide termini for the intervening sediments. Consequently, palaeontologists rely on stratigraphy to date fossils. Stratigraphy

7821-462: The relative ages of rock strata as determined by the early paleontologists and stratigraphers . Since the early years of the twentieth century, absolute dating methods, such as radiometric dating (including potassium/argon , argon/argon , uranium series , and, for very recent fossils, radiocarbon dating ) have been used to verify the relative ages obtained by fossils and to provide absolute ages for many fossils. Radiometric dating has shown that

7920-415: The rules of politus (polished) texts may give the appearance of an artificial language. However, Latinitas was a form of sermo (spoken language), and as such, retains spontaneity. No texts by Classical Latin authors are noted for the type of rigidity evidenced by stylized art, with the exception of repetitious abbreviations and stock phrases found on inscriptions. The standards, authors and manuals from

8019-428: The sea and that they were still living when the strait of Gibraltar was cut through. In the mountains of Parma and Piacenza multitudes of shells and corals with holes may be seen still sticking to the rocks.... In 1666, Nicholas Steno examined a shark, and made the association of its teeth with the "tongue stones" of ancient Greco-Roman mythology, concluding that those were not in fact the tongues of venomous snakes, but

8118-423: The sea we see the oysters all together and also the shellfish and the cuttlefish and all the other shells which congregate together, found all together dead; and the solitary shells are found apart from one another as we see them every day on the sea-shores. And we find oysters together in very large families, among which some may be seen with their shells still joined together, indicating that they were left there by

8217-539: The shell, bone, or other tissue is replaced with another mineral. In some cases mineral replacement of the original shell occurs so gradually and at such fine scales that microstructural features are preserved despite the total loss of original material. Scientists can use such fossils when researching the anatomical structure of ancient species. Several species of saurids have been identified from mineralized dinosaur fossils. Classical Latin Classical Latin

8316-584: The skulls of the Cyclopes of Greek mythology , and are possibly the origin of that Greek myth. Their skulls appear to have a single eye-hole in the front, just like their modern elephant cousins, though in fact it's actually the opening for their trunk. In Norse mythology , echinoderm shells (the round five-part button left over from a sea urchin) were associated with the god Thor , not only being incorporated in thunderstones , representations of Thor's hammer and subsequent hammer-shaped crosses as Christianity

8415-525: The star Sirius . According to the Pyramid Texts , Horus-Sopdu, a combination of Sopdu and the greater sky god Horus , is the offspring of Osiris -Sah and Isis -Sopdet. As a god of the east, Sopdu was said to protect Egyptian outposts along the frontiers and to help the pharaoh control those regions' foreign inhabitants. He was referred to as Lord of the East , and had his greatest cult centre at

8514-465: The sudden appearance of many groups (i.e. phyla ) in the oldest known Cambrian fossiliferous strata. Since Darwin's time, the fossil record has been extended to between 2.3 and 3.5 billion years. Most of these Precambrian fossils are microscopic bacteria or microfossils . However, macroscopic fossils are now known from the late Proterozoic. The Ediacara biota (also called Vendian biota) dating from 575 million years ago collectively constitutes

8613-449: The teeth of some long-extinct species of shark. Robert Hooke (1635–1703) included micrographs of fossils in his Micrographia and was among the first to observe fossil forams . His observations on fossils, which he stated to be the petrified remains of creatures some of which no longer existed, were published posthumously in 1705. William Smith (1769–1839) , an English canal engineer, observed that rocks of different ages (based on

8712-437: The term "pre-classical" to Old Latin and implicating it to post-classical (or post-Augustan) and silver Latin, Cruttwell realized that his construct was not accordance with ancient usage and assertions: "[T]he epithet classical is by many restricted to the authors who wrote in it [golden Latin]. It is best, however, not to narrow unnecessarily the sphere of classicity; to exclude Terence on the one hand or Tacitus and Pliny on

8811-421: The time of Caesar [his ages are different from Teuffel's], and ended with Tiberius. This is what is called the Augustan Age, which was perhaps of all others the most brilliant, a period at which it should seem as if the greatest men, and the immortal authors, had met together upon the earth, in order to write the Latin language in its utmost purity and perfection... and of Tacitus, his conceits and sententious style

8910-556: The watchful eye of a new emperor. The demand for great orators had ceased, shifting to an emphasis on poetry. Other than the historian Livy , the most remarkable writers of the period were the poets Virgil , Horace , and Ovid . Although Augustus evidenced some toleration to republican sympathizers, he exiled Ovid, and imperial tolerance ended with the continuance of the Julio-Claudian dynasty . Augustan writers include: In his second volume, Imperial Period , Teuffel initiated

9009-489: The words. According to Merriam Webster's Collegiate Dictionary , the term classical (from classicus) entered modern English in 1599, some 50 years after its re-introduction to the continent. In Governor William Bradford 's Dialogue (1648), he referred to synods of a separatist church as "classical meetings", defined by meetings between "young men" from New England and "ancient men" from Holland and England. In 1715, Laurence Echard 's Classical Geographical Dictionary

9108-522: The world was once inundated in a great flood that buried living creatures in drying mud. In 1027, the Persian Avicenna explained fossils' stoniness in The Book of Healing : If what is said concerning the petrifaction of animals and plants is true, the cause of this (phenomenon) is a powerful mineralizing and petrifying virtue which arises in certain stony spots, or emanates suddenly from

9207-442: Was a "rank, weed-grown garden," a "decline." Cruttwell had already decried what he saw as a loss of spontaneity in Golden Latin. Teuffel regarded the Silver Age as a loss of natural language, and therefore of spontaneity, implying that it was last seen in the Golden Age. Instead, Tiberius brought about a "sudden collapse of letters." The idea of a decline had been dominant in English society since Edward Gibbon 's Decline and Fall of

9306-484: Was a happy period for the Roman State, the happiest indeed during the whole Empire... But in the world of letters the lassitude and enervation, which told of Rome's decline, became unmistakeable... its forte is in imitation." Teuffel, however, excepts the jurists; others find other "exceptions", recasting Teuffels's view. Style of language refers to repeatable features of speech that are somewhat less general than

9405-459: Was able to define sublime, intermediate, and low styles within Classical Latin. St. Augustine recommended low style for sermons. Style was to be defined by deviation in speech from a standard. Teuffel termed this standard "Golden Latin". John Edwin Sandys , who was an authority in Latin style for several decades, summarizes the differences between Golden and Silver Latin as follows: Silver Latin

9504-454: Was adopted, but also kept in houses to garner Thor's protection. These grew into the shepherd's crowns of English folklore, used for decoration and as good luck charms, placed by the doorway of homes and churches. In Suffolk , a different species was used as a good-luck charm by bakers, who referred to them as fairy loaves , associating them with the similarly shaped loaves of bread they baked. More scientific views of fossils emerged during

9603-400: Was equal to the Golden Age, his Third Period die römische Kaiserheit encompasses both the Silver Age and the centuries now termed Late Latin , in which the forms seemed to break loose from their foundation and float freely. That is, men of literature were confounded about the meaning of "good Latin." The last iteration of Classical Latin is known as Silver Latin. The Silver Age is the first of

9702-737: Was published. In 1736, Robert Ainsworth 's Thesaurus Linguae Latinae Compendarius turned English words and expressions into "proper and classical Latin." In 1768, David Ruhnken 's Critical History of the Greek Orators recast the molded view of the classical by applying the word "canon" to the pinakes of orators after the Biblical canon , or list of authentic books of the Bible. In doing so, Ruhnken had secular catechism in mind. In 1870, Wilhelm Sigismund Teuffel 's Geschichte der Römischen Literatur ( A History of Roman Literature ) defined

9801-408: Was real. Georges Cuvier came to believe that most if not all the animal fossils he examined were remains of extinct species. This led Cuvier to become an active proponent of the geological school of thought called catastrophism . Near the end of his 1796 paper on living and fossil elephants he said: All of these facts, consistent among themselves, and not opposed by any report, seem to me to prove

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