Where: Dale County, Alabama (31.6° N, 85.8° W: paleocoordinates 33.9° N, 68.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: "Ostrea thirsae" Member (Nanafalia Formation), Middle Paleocene to Middle Paleocene (61.7 - 55.8 Ma)

• Replicates are ~1m separated from one another

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; poorly lithified, gray, argillaceous, calcareous sandstone

Size class: mesofossils

Collection methods: bulk, surface (in situ), sieve,

• Gastropod shells were only counted if they contained the apex of the shell; bivalves shells were only counted if they contained the umbo, used a 2mm sieve.

Primary reference: J. A. Sessa, M. E. Patzkowsky, and T. J. Bralower. 2009. Impact of lithification on the diversity, size distribution, and recovery dynamics of marine invertebrate assemblages. Geology 37(2):115-118 [M. Patzkowsky/J. Sessa/J. Sessa]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 85562: authorized by Mark Patzkowsky, entered by Jocelyn Sessa on 08.01.2009, edited by Pete Wagner

Creative Commons license: CC BY (attribution)