Where: Wilcox County, Alabama (32.0° N, 87.4° W: paleocoordinates 34.7° N, 69.3° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Matthews Landing Marl Member (Porters Creek Formation), Selandian (61.6 - 59.2 Ma)
• Bulk 1 is 50m laterally from bulk 2, Bulk 4 is ~1.25m higher than Bulks 1&5 and ~7m laterally, Bulk 5 is 1m laterally from Bulk 1.
• bed-level stratigraphic resolution
Environment/lithology: deep subtidal; unlithified, micaceous, gray, sandy, calcareous 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 86186: authorized by Mark Patzkowsky, entered by Jocelyn Sessa on 26.01.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Corbula subcompressa clam | |
Venericardia sp. Lamarck 1801 clam | |
Propeamussium alabamense Aldrich 1886 mud scallop | |
Cucullaea macrodonta clam | |
Gastropoda | |
Falsifusus harrisi snail | |
Agaronia mediavia snail | |
Natica reversa moon snail
Euspira perspecta moon snail | |
"Turritella alabamiensis" = Mesalia alabamiensis De Gregorio 1890 turret shell
Turritella aldrichi turret shell
Turritella "sp. A" Lamarck 1799 turret shell |