Where: Choctaw County, Alabama (32.2° N, 88.0° W: paleocoordinates 35.0° N, 69.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Matthews Landing Marl Member (Porters Creek Formation), Selandian (61.6 - 59.2 Ma)

• Replicates 1, 3 and 4 are from same replicate collecting area, bulk 2 is 9.2m from them.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; poorly lithified, coarse-grained, concretionary, glauconitic, gray, green, calcareous sandstone and unlithified, gray claystone

Size class: mesofossils

Collection methods: bulk, sieve,

• Gastropod shells were only counted if they contained the apex of the shell; bivalves shells were only counted if they contained the umbo.

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 86173: authorized by Mark Patzkowsky, entered by Jocelyn Sessa on 26.01.2009

Creative Commons license: CC BY (attribution)