USGS Loc. 365 - Johnson's Sink [Hawthorn Gp] (Miocene of the United States)

Where: Levy County, Florida (29.6° N, 82.1° W)

• Paleocoordinates: 32.2° N, 73.8° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hawthorn Group, Early/Lower Miocene (23.0 - 16.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; unlithified, calcareous marl and unlithified, calcareous sandstone

• marls, sands, clays, for the most part unconsolidated, in places highly calcareous

Size class: macrofossils

Reposited in the USGS

Primary reference: J. R. Gardner. 1947. The Molluscan Fauna of the Alum Bluff Group of Florida. United States Geological Survey Professional Paper (142A-H)1-709 [A. Miller/K. Layou/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42440: authorized by Arnold Miller, entered by Karen Layou on 29.07.2004, edited by Mark Uhen

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Ostreida - Ostreidae
Ostrea normalis
Ostrea normalis Gardner 1926 oyster
abundant
Echinoidea
 Clypeasteroida - Neolaganidae
"Laganum floridanum" = Durhamella floridanum
"Laganum floridanum" = Durhamella floridanum Clark and Twitchell 1915 sand dollar