TMM Wills Point 8 (Paleocene to of the United States)

Where: Bastrop County, Texas (30.1° N, 97.5° W: paleocoordinates 34.9° N, 79.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Wills Point Formation (Midway Group), Early/Lower Paleocene to Early/Lower Paleocene (66.0 - 58.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; unlithified, glauconitic, silty claystone

• "Thinly bedded, silty, glauconitic, fossiliferous clay, containing concretions near the top of the outcrop." The lithology of this locality is described in Zachos et al., 2005.

Size class: mesofossils

Reposited in the TMM

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: taxonomic analysis

PaleoDB collection 86307: authorized by Mark Patzkowsky, entered by Jocelyn Sessa on 28.01.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Hexacorallia -
Scleractinia indet. Bourne 1900 stony coral
 Scleractinia - Caryophylliidae
"Caryophyllia dumblei" = Caryophyllia mediavia Vaughan and Popenoe 1935 stony coral
Platytrochus ? primaevus Vaughan and Popenoe 1935 stony coral
Gastropoda
 Cerithioidea - Turritellidae
Turritella hilli turret shell
Turritella ? hilli turret shell
 Architaenioglossa - Ampullinidae
"Ampullella sp." = Ampullina
"Ampullella sp." = Ampullina Férussac 1822 snail
 Sorbeoconcha - Rostellariidae
 Neogastropoda - Olivellidae
 Neogastropoda - Buccinidae
 Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806 snail
 Neogastropoda - Melongenidae
 Neogastropoda - Ptychatractidae
Exilia pergracilis Conrad 1860 snail
 Neogastropoda - Costellariidae
 Neogastropoda - Volutidae
Athleta ? sp., "Volutocorbis sp." = Athleta (Volutocorbis)
Athleta ? sp. Conrad 1853 volute
"Volutocorbis sp." = Athleta (Volutocorbis) Dall 1890 volute
 Sorbeoconcha - Naticidae
Natica sp. Scopoli 1777 moon snail
 Heterostropha - Acteonidae
 Heterostropha - Ringiculidae
 Heterostropha - Pyramidellidae
Creonella sp. Wade 1917 snail
 Opisthobranchia - Retusidae
Bivalvia
 Arcida - Arcidae
Barbatia sp. Gray 1842 clam
 Arcida - Cucullaeidae
 Lucinida - Lucinidae
Phacoides sp. Blainville 1825 clam
 Pholadida - Corbulidae
Corbula ? sp. Bruguière 1789 clam
 Cardiida - Veneridae
Pitar kempae venus clam
 Carditida - Carditidae
"Venericardia bulla" = Venericardia (Baluchicardia) bulla, "Venericardia wilcoxensis" = Venericardia (Baluchicardia) wilcoxensis
"Venericardia bulla" = Venericardia (Baluchicardia) bulla Dall 1903 clam
"Venericardia wilcoxensis" = Venericardia (Baluchicardia) wilcoxensis Dall 1903 clam
Venericardia wilcoxensis subsp.
 Carditida - Crassatellidae
Crassatella sp. Lamarck 1799 clam
 Nuculanida - Nuculanidae
Jupiteria smirna pointed nut clam
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell