Gateway to the Paleobiology Database
Gray Fossil Site (Neogene to of the United States)

Where: Washington County, Tennessee (36.4° N, 82.5° W: paleocoordinates 36.6° N, 81.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Late/Upper Hemphillian to Late/Upper Hemphillian (10.3 - 4.9 Ma)

• "4.5 to 7 Myr (late Miocene to early Pliocene" (meaning late Hemphillian to early Blancan)"

•Samuels et al., 2018: "Considering the Gray Fossil Site fauna in total, a revised estimate of the age of the Gray Fossil Site is Early Pliocene near the Hemphillian–Blancan transition, likely between 4.9 and 4.5 Ma (Fig. 2)."

• member-level stratigraphic resolution

Environment/lithology: sinkhole; argillaceous, sandy siltstone and conglomerate

• "highly laminated, organic laden, silty sediments" (Wallace et al. 2002)

•"finely laminated clays, silts, and fine sands intermixed with isolated gravel lenses that fill a former sinkhole... up to 39 m thick... result of a small lake or pond that formed within the sinkhole" (Wallace and Wang 2004)

Size classes: macrofossils, mesofossils, microfossils

Reposited in the FLMNH

Collection methods: quarrying,

Primary reference: S. C. Wallace and X. Wang. 2004. Two new carnivores from an unusual late Tertiary forest biota in eastern North America. Nature 431:556-559 [J. Alroy/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26574: authorized by John Alroy, entered by John Alroy on 17.10.2002, edited by Richard Hulbert, Evangelos Vlachos, Mark Uhen, Patricia Holroyd and Jonathan Marcot

Creative Commons license: CC BY (attribution)