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Withlacoochee River Site 4A (Neogene of the United States)

Where: Marion County, Florida (28.8° N, 82.3° W: paleocoordinates 29.0° N, 80.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Hemphillian (10.3 - 4.9 Ma)

• said to be early Hemphillian

•sinkhole is "developed in the Inglis member of the Ocala Limestone (Late Eocene)" (Becker 1985)

• group of beds-level stratigraphic resolution

Environment/lithology: pond; fine-grained, green, silty claystone

• "a pond environment" but there "is some [faunal] evidence for marine or estuarine influence" (Becker 1985) or "a freshwater pond or oxbow lake cut" (Webb 2008)
• "fine green clays, with some evidence of layering or varving" that fill "a sinkhole" (Becker 1985) or "massive green clays and occasionally concentrated in thin beds of silt"

Size class: macrofossils

Reposited in the FLMNH

• Eocene, Hemphillian, and Rancholabrean fossils are all present but easily distinguished based on preservation and color

Primary reference: J. J. Becker. 1985. Fossil herons (Aves: Ardeidae) of the late Miocene and early Pliocene of Florida. Journal of Vertebrate Paleontology 5(1):24-31 [J. Alroy/J. Alroy/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18601: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Richard Hulbert, Jonathan Marcot and Patricia Holroyd

Creative Commons license: CC BY (attribution)