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McLeod Prison (OMNH V706), Tomato Hill (Cretaceous to of the United States)

Also known as Howard McLeod Correctional Center; HMCC

Where: Atoka County, Oklahoma (34.4° N, 96.1° W: paleocoordinates 31.9° N, 50.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: middle Member (Antlers Formation), Late/Upper Aptian to Late/Upper Aptian (122.5 - 109.0 Ma)

• said to be late Aptian to early Albian

•microvertebrates are from "1-1.5 m below the dinosaur-bearing horizon" (Nydam and Cifelli 2002b)

• group of beds-level stratigraphic resolution

Environment/lithology: "floodplain"; concretionary, gray, green, red claystone and poorly lithified, lenticular, brown, yellow sandstone

• "overbank deposit associated with a meandering fluvial system" (Nydam and Cifelli 2002b)
• "red and gray/green claystone with intermittent lenses of poorly consolidated sandstones and numerous carbonate concretions" (Nydam and Cifelli 2002b)

Size classes: macrofossils, mesofossils

Collection methods: bulk, quarrying, mechanical, sieve,

Primary reference: R. L. Cifelli. 1997. First notice on Mesozoic mammals from Oklahoma. Oklahoma Geology Notes 57(1):4-17 [J. Alroy/J. Alroy/J. Ju] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14392: authorized by John Alroy, entered by John Alroy on 21.09.1998, edited by Matthew Carrano, Roger Benson and Philip Mannion

Creative Commons license: CC BY (attribution)