A Smithsonian trinomial (formally the Smithsonian Institution Trinomial System , abbreviated SITS ) is a unique identifier assigned to archaeological sites in many states in the United States . Trinomials are composed of a one or two digit coding for the state, typically two letters coding for the county or county-equivalent within the state, and one or more sequential digits representing the order in which the site was listed in that county. The Smithsonian Institution developed the site number system in the 1930s and 1940s, but it no longer maintains the system. Trinomials are now assigned by the individual states. The 48 states then in the union were assigned numbers in alphabetical order. Alaska was assigned number 49 and Hawaii was assigned number 50, after those states were admitted to the union. There is no Smithsonian trinomial number assigned for the District of Columbia or any United States territory.
5-784: The Battle Mound Site ( 3LA1 ) is an archaeological site in Lafayette County, Arkansas in the Great Bend region of the Red River basin. The majority of the mound was built from 1200 to 1400 CE. The site has the largest mound of the Caddoan Mississippian culture (a regional variation of the Mississippian culture ). It measures approximately 670 feet (200 m) in length, 320 feet (98 m) wide, and 34 feet (10 m) in height. Four low rises at
10-407: A quadrangle, a sequential number within the rectangle, and a code identifying the agency issuing the sequential number. California uses a three-letter abbreviation for counties. Connecticut and Rhode Island do not use any sub-state codes, with site identifiers consisting of the state abbreviation and a sequential number series for the whole state. Delaware uses a single letter code for counties and adds
15-486: The excavation have not been published. In recent years archaeologist Duncan P. McKinnon has been conducting research at the site using archaeogeophysical means. This article relating to the Indigenous peoples of North America is a stub . You can help Misplaced Pages by expanding it . Smithsonian trinomial Most states use trinomials of the form "nnAAnnnn", but some specify a space or dash between parts of
20-510: The identifier, i.e., "nn AA nnnn" or "nn-AA-nnnn". Some states use variations of the trinomial system. Arizona, California, Connecticut, Maine, Rhode Island, and Vermont use two-letter abbreviations of the state name instead of the Smithsonian number. Alaska uses three-letter abbreviations for USGS map quadrangles in place of the county code. Arizona uses a five-part identifier based on USGS maps, specifying quadrangles, then rectangles within
25-461: The site are believed also to have been constructed earthwork mounds. Many burial grounds, occupation areas, and other mound sites in the area may be connected with this site. Minor investigations were conducted at the site by Dr. Alex D. Krieger of the University of Texas at Austin and his assistant Mr. Lynn E. Howard, between June 25 and September 11, 1948. The field notes and a full analysis of
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