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Coleman IIA (Pleistocene of the United States)

Where: Sumter County, Florida (28.8° N, 82.1° W: paleocoordinates 28.8° N, 81.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Irvingtonian (1.8 - 0.3 Ma)

• said to be late Irvingtonian

•material is from alternating clay and sand beds in "8 to 10 feet of sediments"

• group of beds-level stratigraphic resolution

Environment/lithology: sinkhole; brown claystone and gray, conglomeratic sandstone

• "filled sinkhole... 30 yards long by 25 yards wide"
• "a wet orange-brown clay and a coarse gray-white sand... sand facies were filled with pebble- to boulder-sized limestone rubble"

Size classes: macrofossils, mesofossils

Collection methods: salvage, quarrying,

• sediments "completely destroyed by mining operations in 1966"

Primary reference: R. A. Martin. 1974. Fossil mammals from the Coleman IIA fauna, Sumter County. In S. D. Webb (ed.), Pleistocene Mammals of Florida 35-99 [J. Alroy/J. Alroy/J. Head] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 20289: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Evangelos Vlachos and Jonathan Marcot

Creative Commons license: CC BY (attribution)