Order ( Latin : ordo ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy . It is classified between family and class . In biological classification , the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes . An immediately higher rank, superorder , is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families.
41-499: Monkey is a common name that may refer to most mammals of the infraorder Simiiformes , also known as simians. Traditionally, all animals in the group now known as simians are counted as monkeys except the apes . Thus monkeys, in that sense, constitute an incomplete paraphyletic grouping; however, in the broader sense based on cladistics , apes (Hominoidea) are also included, making the terms monkeys and simians synonyms in regard to their scope. In 1812, Étienne Geoffroy grouped
82-461: A cohors (plural cohortes ). Some of the plant families still retain the names of Linnaean "natural orders" or even the names of pre-Linnaean natural groups recognized by Linnaeus as orders in his natural classification (e.g. Palmae or Labiatae ). Such names are known as descriptive family names. In the field of zoology , the Linnaean orders were used more consistently. That is,
123-664: A guide dog ). In 2010, the U.S. federal government revised its definition of service animal under the Americans with Disabilities Act (ADA). Non-human primates are no longer recognized as service animals under the ADA. The American Veterinary Medical Association does not support the use of non-human primates as assistance animals because of animal welfare concerns, the potential for serious injury to people, and risks that primates may transfer dangerous diseases to humans . Infraorder What does and does not belong to each order
164-675: A ' cold-blooded ' metabolism. However, the ancestors of mammals and birds also had these traits and so birds and mammals can be said to "have evolved from reptiles", making the reptiles, when defined by these traits, a grade rather than a clade. In microbiology , taxa that are thus seen as excluded from their evolutionary grade parent group are called taxa in disguise . Paraphyletic taxa will often, but not always, represent evolutionary grades. In some cases paraphyletic taxa are united simply by not being part of any other groups, and give rise to so-called wastebasket taxa which may even be polyphyletic . The traditional Linnaean way of defining taxa
205-509: A capital letter. For some groups of organisms, their orders may follow consistent naming schemes . Orders of plants , fungi , and algae use the suffix -ales (e.g. Dictyotales ). Orders of birds and fishes use the Latin suffix -iformes meaning 'having the form of' (e.g. Passeriformes ), but orders of mammals and invertebrates are not so consistent (e.g. Artiodactyla , Actiniaria , Primates ). For some clades covered by
246-570: A distinct rank of biological classification having its own distinctive name (and not just called a higher genus ( genus summum )) was first introduced by the German botanist Augustus Quirinus Rivinus in his classification of plants that appeared in a series of treatises in the 1690s. Carl Linnaeus was the first to apply it consistently to the division of all three kingdoms of nature (then minerals , plants , and animals ) in his Systema Naturae (1735, 1st. Ed.). For plants, Linnaeus' orders in
287-584: A facility in which monkeys and other primates are kept within enclosures for public entertainment. Commonly known as a monkey house ( primatarium ), sometimes styled Monkey House , notable examples include London Zoo's Monkey Valley ; Zoo Basel's Monkey house/exhibit ; the Monkey Tropic House at Krefeld Zoo; Bronx Zoo's Monkey House ; Monkey Jungle , Florida; Lahore Zoo's Monkey House ; Monkey World , Dorset, England; and Edinburgh Zoo's Monkey House . Former cinema, The Scala, Kings Cross spent
328-462: A series, leading through "monkeys" and "apes" to humans. Monkeys thus constituted a " grade " on the path to humans and were distinguished from "apes". Scientific classifications are now more often based on monophyletic groups, that is groups consisting of all the descendants of a common ancestor. The New World monkeys and the Old World monkeys are each monophyletic groups, but their combination
369-629: A short time as a primatarium. Some organizations train capuchin monkeys as service animals to assist quadriplegics and other people with severe spinal cord injuries or mobility impairments . After being socialized in a human home as infants, the monkeys undergo extensive training before being placed with disabled people. Around the house, the monkeys assist with daily tasks such as feeding, fetching, manipulating objects, and personal care. Helper monkeys are usually trained in schools by private organizations, taking seven years to train, and are able to serve 25–30 years (two to three times longer than
410-471: A synonym for "monkey" or is used to mean a tailless humanlike primate. Colloquially, the terms "monkey" and "ape" are widely used interchangeably. Also, a few monkey species have the word "ape" in their common name, such as the Barbary ape . Later in the first half of the 20th century, the idea developed that there were trends in primate evolution and that the living members of the order could be arranged in
451-510: A tribe or a troop. Two separate groups of primates are referred to as "monkeys": New World monkeys (platyrrhines) from South and Central America and Old World monkeys ( catarrhines in the superfamily Cercopithecoidea) from Africa and Asia. Apes (hominoids)—consisting of gibbons , orangutans , gorillas , chimpanzees and bonobos , and humans —are also catarrhines but were classically distinguished from monkeys. Tailless monkeys may be called "apes", incorrectly according to modern usage; thus
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#1732765033344492-401: Is a cladogram with some extinct monkey families. Generally, extinct non-hominoid simians, including early catarrhines are discussed as monkeys as well as simians or anthropoids, which cladistically means that Hominoidea are monkeys as well, restoring monkeys as a single grouping. It is indicated approximately how many million years ago (Mya) the clades diverged into newer clades. It is thought
533-467: Is a phylogenetic tree —a diagram containing a hypothesis of relationships that reflects the evolutionary history of a group of organisms. An evolutionary grade is a group of species united by morphological or physiological traits, that has given rise to another group that has major differences from the ancestral group's condition, and is thus not considered part of the ancestral group, while still having enough similarities that we can group them under
574-471: Is ambiguous and sometimes monkey includes non-human hominoids. In addition, frequent arguments are made for a monophyletic usage of the word "monkey" from the perspective that usage should reflect cladistics. Several science-fiction and fantasy stories have depicted non-human (fantastical or alien) antagonistic characters refer to humans as monkeys, usually in a derogatory manner, as a form of metacommentary . A group of monkeys may be commonly referred to as
615-591: Is available, organisms are preferentially grouped into clades . Where data is lacking, or groups of uncertain relationship are to be compared, the cladistic method is limited and grade provides a useful tool for comparing organisms. This is particularly common in palaeontology , where fossils are often fragmentary and difficult to interpret. Thus, traditional palaeontological works are often using evolutionary grades as formal or informal taxa, including examples such as labyrinthodonts , anapsids , synapsids , dinosaurs , ammonites , eurypterids , lobopodians and many of
656-419: Is determined by a taxonomist , as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with
697-496: Is through the use of anatomical traits. When the actual phylogenetic relationship is unknown, well defined groups sometimes turn out to be defined by traits that are primitive rather than derived. In Linnaean systematics , evolutionary grades are accepted in higher taxonomic ranks , though generally avoided at family level and below. In phylogenetic nomenclature evolutionary grades (or any other form of paraphyly) are not accepted. Where information about phylogenetic relationships
738-633: The Online Etymology Dictionary , the word "monkey" may originate in a German version of the Reynard the Fox fable, published c. 1580 . In this version of the fable, a character named Moneke is the son of Martin the Ape. In English, no clear distinction was originally made between "ape" and "monkey"; thus the 1911 Encyclopædia Britannica entry for "ape" notes that it is either
779-528: The International Code of Zoological Nomenclature , several additional classifications are sometimes used, although not all of these are officially recognized. In their 1997 classification of mammals , McKenna and Bell used two extra levels between superorder and order: grandorder and mirorder . Michael Novacek (1986) inserted them at the same position. Michael Benton (2005) inserted them between superorder and magnorder instead. This position
820-815: The Systema Naturae and the Species Plantarum were strictly artificial, introduced to subdivide the artificial classes into more comprehensible smaller groups. When the word ordo was first consistently used for natural units of plants, in 19th-century works such as the Prodromus Systematis Naturalis Regni Vegetabilis of Augustin Pyramus de Candolle and the Genera Plantarum of Bentham & Hooker, it indicated taxa that are now given
861-924: The apes and the Cercopithecidae group of monkeys together and established the name Catarrhini , "Old World monkeys" (" singes de l'Ancien Monde " in French ). The extant sister of the Catarrhini in the monkey ("singes") group is the Platyrrhini (New World monkeys). Some nine million years before the divergence between the Cercopithecidae and the apes, the Platyrrhini emerged within "monkeys" by migration to South America from Afro-Arabia (the Old World), likely by ocean. Apes are thus deep in
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#1732765033344902-489: The owl monkeys and greater galagos — monochromatic . Although both the New and Old World monkeys, like the apes, have forward-facing eyes, the faces of Old World and New World monkeys look very different, though again, each group shares some features such as the types of noses, cheeks and rumps. The following list shows where the various monkey families (bolded) are placed in the classification of living (extant) primates. Below
943-419: The pygmy marmoset , which can be as small as 117 mm ( 4 + 5 ⁄ 8 in) with a 172 mm ( 6 + 3 ⁄ 4 in) tail and just over 100 g ( 3 + 1 ⁄ 2 oz) in weight, to the male mandrill , almost 1 m (3 ft 3 in) long and weighing up to 36 kg (79 lb). Some are arboreal (living in trees) while others live on the savanna ; diets differ among
984-1095: The New World monkeys started as a drifted "Old World monkey" group from the Old World (probably Africa) to the New World (South America). Tarsiiformes Eosimiidae s.s. (†37) Phileosimias (†46) Amphipithecidae (†35) Parapithecoidea (†30) Proteopithecidae (†34) Chilecebus (†20) Tremacebus (†20) Homunculus (†16) Dolichocebus (†20) Crown Platyrrhini (New World Monkeys) Oligopithecidae (†34) Propliopithecoidea (†30) Pliopithecoidea (†6) Micropithecus (†15) Proconsulidae (†18) Equatorius (†16) Morotopithecus (†20) Afropithecus (†16) Nyanzapithecinae (†7) Hominidae Hylobatidae Saadanioidea (†28) Victoriapithecinae (†19) Crown Cercopithecoidea (Old World Monkeys) The many species of monkey have varied relationships with humans. Some are kept as pets , others used as model organisms in laboratories or in space missions. They may be killed in monkey drives (when they threaten agriculture) or used as service animals for
1025-417: The basis of their usefulness for laymen and field researchers. In bacteriology , the renaming of species or groups that turn out to be evolutionary grades is kept to a minimum to avoid misunderstanding, which in the case of pathogens could have fatal consequences. When referring to a group of organisms, the term "grade" is usually enclosed in quotation marks to denote its status as a paraphyletic term. With
1066-512: The disabled. In some areas, some species of monkey are considered agricultural pests , and can cause extensive damage to commercial and subsistence crops. This can have important implications for the conservation of endangered species, which may be subject to persecution. In some instances farmers' perceptions of the damage may exceed the actual damage. Monkeys that have become habituated to human presence in tourist locations may also be considered pests, attacking tourists. Many zoos have maintained
1107-460: The more well known taxa of human evolution . Organizing organisms into grades rather than strict clades can also be very useful to understand the evolutionary sequence behind major diversification of both animals and plants. Evolutionary grades, being united by gross morphological traits, are often eminently recognizable in the field. While taxonomy seeks to eliminate paraphyletic taxa, such grades are sometimes kept as formal or informal groups on
1148-708: The orders in the zoology part of the Systema Naturae refer to natural groups. Some of his ordinal names are still in use, e.g. Lepidoptera (moths and butterflies) and Diptera (flies, mosquitoes, midges, and gnats). In virology , the International Committee on Taxonomy of Viruses 's virus classification includes fifteen taxomomic ranks to be applied for viruses , viroids and satellite nucleic acids : realm , subrealm , kingdom , subkingdom, phylum , subphylum , class, subclass, order, suborder, family, subfamily , genus, subgenus , and species. There are currently fourteen viral orders, each ending in
1189-564: The precursor of the currently used International Code of Nomenclature for algae, fungi, and plants . In the first international Rules of botanical nomenclature from the International Botanical Congress of 1905, the word family ( familia ) was assigned to the rank indicated by the French famille , while order ( ordo ) was reserved for a higher rank, for what in the 19th century had often been named
1230-502: The rank of family (see ordo naturalis , ' natural order '). In French botanical publications, from Michel Adanson 's Familles naturelles des plantes (1763) and until the end of the 19th century, the word famille (plural: familles ) was used as a French equivalent for this Latin ordo . This equivalence was explicitly stated in the Alphonse Pyramus de Candolle 's Lois de la nomenclature botanique (1868),
1271-488: The rise of phylogenetic nomenclature , the use of evolutionary grades as formal taxa has come under debate. Under a strict phylogenetic approach, only monophyletic taxa are recognized. This differs from the more traditional approach of evolutionary taxonomy . The difference in approach has led to a vigorous debate between proponents of the two approaches to taxonomy, particularly in well established fields like vertebrate palaeontology and botany . The difference between
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1312-529: The same clade. The ancestral group will not be phylogenetically complete (i.e. is not a clade ), and so will represent a paraphyletic taxon. The most commonly cited example is that of reptiles . In the early 19th century, the French naturalist Latreille was the first to divide tetrapods into the four familiar classes of amphibians, reptiles, birds, and mammals. In this system, reptiles are characterized by traits such as laying membranous or shelled eggs, having skin covered in scales or scutes , and having
1353-574: The simians are a sister group to the tarsiers – the two members diverged some 70 million years ago. New World monkeys and catarrhine monkeys emerged within the simians roughly 35 million years ago. Old World monkeys and apes emerged within the catarrhine monkeys about 25 million years ago. Extinct basal simians such as Aegyptopithecus or Parapithecus (35–32 million years ago) are also considered monkeys by primatologists. Lemurs , lorises , and galagos are not monkeys, but strepsirrhine primates (suborder Strepsirrhini). The simians' sister group ,
1394-659: The suffix -virales . Grade (biology) A grade is a taxon united by a level of morphological or physiological complexity. The term was coined by British biologist Julian Huxley , to contrast with clade , a strictly phylogenetic unit. The concept of evolutionary grades arises in the context of phylogenetics : the study of the evolutionary history and relationships among or within groups of organisms . These relationships are determined by phylogenetic inference methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences, or morphology . The result of such an analysis
1435-418: The tailless Barbary macaque is historically called the "Barbary ape". As apes have emerged in the monkey group as sister of the old world monkeys, characteristics that describe monkeys are generally shared by apes as well. Williams et al. outlined evolutionary features, including in stem groupings, contrasted against the other primates such as the tarsiers and the lemuriformes . Monkeys range in size from
1476-513: The tarsiers, are also haplorhine primates; however, they are also not monkeys. Apes emerged within monkeys as sister of the Cercopithecidae in the Catarrhini, so cladistically they are monkeys as well. However, there has been resistance to directly designate apes (and thus humans) as monkeys, so "Old World monkey" may be taken to mean either the Cercopithecoidea (not including apes) or the Catarrhini (including apes). That apes are monkeys
1517-452: The tree of extant and extinct monkeys, and any of the apes is distinctly closer related to the Cercopithecidae than the Platyrrhini are. Many monkey species are tree-dwelling ( arboreal ), although there are species that live primarily on the ground, such as baboons . Most species are mainly active during the day ( diurnal ). Monkeys are generally considered to be intelligent , especially the Old World monkeys. Within suborder Haplorhini ,
1558-572: The various species but may contain any of the following: fruit, leaves, seeds, nuts, flowers, eggs and small animals (including insects and spiders). Some characteristics are shared among the groups; most New World monkeys have long tails, with those in the Atelidae family being prehensile , while Old World monkeys have non-prehensile tails or no visible tail at all. Old World monkeys have trichromatic color vision like that of humans, while New World monkeys may be trichromatic, dichromatic , or—as in
1599-418: Was adopted by Systema Naturae 2000 and others. In botany , the ranks of subclass and suborder are secondary ranks pre-defined as respectively above and below the rank of order. Any number of further ranks can be used as long as they are clearly defined. The superorder rank is commonly used, with the ending -anae that was initiated by Armen Takhtajan 's publications from 1966 onwards. The order as
1640-475: Was already realized by Georges-Louis Leclerc, Comte de Buffon in the 18th century. Linnaeus placed this group in 1758 together with the tarsiers, in a single genus " Simia " (sans Homo ), an ensemble now recognised as the Haplorhini. Monkeys, including apes, can be distinguished from other primates by having only two pectoral nipples, a pendulous penis, and a lack of sensory whiskers . According to
1681-404: Was not, since it excluded hominoids (apes and humans). Thus, the term "monkey" no longer referred to a recognized scientific taxon . The smallest accepted taxon which contains all the monkeys is the infraorder Simiiformes , or simians. However this also contains the hominoids, so that monkeys are, in terms of currently recognized taxa, non-hominoid simians. Colloquially and pop-culturally, the term