USGS M8702 (Cretaceous of the United States)

Where: Bezar County, Texas (29.4° N, 98.7° W: paleocoordinates 34.9° N, 72.0° W)

• small collection-level geographic resolution

When: Pecan Gap Chalk Formation, Middle Campanian (83.5 - 70.6 Ma)

Environment/lithology: marine; carbonate

Size class: mesofossils

Reposited in the USGS

Primary reference: W. P. Elder. 1996. Bivalves and Gastropods from the Middle Campanian Anacacho Limestone, south central Texas. Journal of Paleontology 70(2):247-271 [M. Patzkowsky/K. Layou/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3612: authorized by Mark Patzkowsky, entered by Karen Layou on 05.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Baculitidae
Baculites sp.
Baculites sp. Lamarck 1799 ammonite
Gastropoda
 Sorbeoconcha - Naticidae
Naticidae indet.
Naticidae indet. Guilding 1834 moon snail
 Sorbeoconcha - Aporrhaidae
? Arrhoges sp.
? Arrhoges sp. Gabb 1868 snail
originally entered as "?Arrhoges sp."
 Cerithioidea - Turritellidae
Turritella quadrilira
Turritella quadrilira Johnson 1898 turret shell
Bivalvia
 Pectinida - Pectinoidae
Camptonectes burlingtonensis
 Pectinida - Neitheoidae
Neithea quinquecostata
Neithea quinquecostata Sowerby 1814 scallop
 Myalinida - Inoceramidae
Inoceramus balticus
Inoceramus balticus Bohm 1907 clam
 Arcida - Parallelodontidae
Nemodon aff. punctus
Nemodon aff. punctus clam
originally entered as "Nemodon aff. punctus"
 Lucinida - Lucinidae
Lucina aff. parva
Lucina aff. parva Stephenson 1923 clam
originally entered as "Lucina aff. parva"
 Poromyida - Poromyidae
Cymella cf. ironensis
Cymella cf. ironensis clam
originally entered as "Cymella cf. ironensis"
 Cardiida - Cardiidae
Granocardium cf. dumosum
Granocardium cf. dumosum Conrad 1870 cockle
originally entered as "Granocardium cf. dumosum"
 Cardiida - Veneridae
Legumen ellipticum
 Carditida - Crassatellidae
Crassatella cf. hodgei
Crassatella cf. hodgei Stephenson 1923 clam
originally entered as "Crassatella cf. hodgei"
 Trigoniida - Megatrigonioidae
Pterotrigonia cf. marionensis
Pterotrigonia cf. marionensis clam
originally entered as "Pterotrigonia cf. marionensis"