Where: Monroe County, Alabama (31.8° N, 87.4° W: paleocoordinates 34.3° N, 70.2° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Bells Landing Marl Member (Tuscahoma Formation), Thanetian (59.2 - 56.0 Ma)
• replicates are all from the fossiliferous layer 7 ft above water level, about 1m apart.
• bed-level stratigraphic resolution
Environment/lithology: shallow subtidal; unlithified, glauconitic, muddy sandstone
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 86179: authorized by Mark Patzkowsky, entered by Jocelyn Sessa on 26.01.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Cadulus sp. Philippi 1844 tusk shell | |
Gastropoda | |
Architectonica sp. Röding 1798 sundial | |
Retusa sylvaerupis snail | |
"Turritella mortoni" = Kapalmerella mortoni, Mesalia alabamiensis
| |
"Calyptraea aperta" = Calyptraea (Trochita) aperta
"Calyptraea aperta" = Calyptraea (Trochita) aperta Solander 1766 slipper shell | |
Euspira marylandica Conrad 1865 moon snail
Natica sp. Scopoli 1777 moon snail | |
Cantharus elegantissimus true whelk | |
Levifusus supraplanus snail | |
"Surcula nasuta" = Turricula
"Surcula nasuta" = Turricula snail | |
Raphitoma cf. veatchi snail | |
| |
? Athleta sp. Conrad 1853 volute | |
Bivalvia | |
Calorhadia aldrichiana, "Calorhadia pharcida" = Calorhadia (Calorhadia) pharcida
Calorhadia aldrichiana pointed nut clam
"Calorhadia pharcida" = Calorhadia (Calorhadia) pharcida Dall 1898 pointed nut clam | |
"Chlamys greggi" = Dhondtichlamys greggi
"Chlamys greggi" = Dhondtichlamys greggi Harris 1897 scallop | |
Ostrea sinuosa oyster | |
| |
Tellina greggi tellin clam | |
| |
"Corbula subengonata" = Cuneocorbula subengonata
"Corbula subengonata" = Cuneocorbula subengonata Dall 1898 clam | |
Pholas alatoidea clam | |
Periploma sp. Schumacher 1816 clam | |
Epilucina sp. Dall 1901 clam | |
"Venericardia greggiana" = Venericardia (Baluchicardia) greggiana
"Venericardia greggiana" = Venericardia (Baluchicardia) greggiana Dall 1903 clam | |
Anthozoa | |
Balanophyllia elaborata stony coral |