Where: Falls County, Texas (31.3° N, 96.9° W: paleocoordinates 36.6° N, 75.4° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Prediscosphaera quadripunctata nannofossil zone, Corsicana Marl Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• Discoscaphites iris ammonoid zone - Landman et al., 2004
Environment/lithology: marine; unlithified, shelly/skeletal, gray claystone
Size class: mesofossils
Collection methods: bulk, mechanical,
Primary reference: T. A. Hansen, B. Upshaw, E. G. Kauffman and W. Gose. 1993. Patterns of molluscan extinction and recovery across the Cretaceous-Tertiary boundary in east Texas; report on new outcrops. Cretaceous Research 14:685-706 [A. Miller/K. Layou/M. Uhen]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 5554: authorized by Arnold Miller, entered by Karen Layou on 13.10.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Nuculana sp. Link 1807 pointed nut clam includes: N. sp. b (3), N. sp. d (2), N. sp. e (1), and N. sp. (4)
Nuculana corsicana pointed nut clam | |
"Dreissena tippana" = Cuneolus tippana
"Dreissena tippana" = Cuneolus tippana Conrad 1858 mussel | |
Crenella aff. serica Conrad 1860 clam | |
Pycnodonte sp. Fischer von Waldheim 1835 oyster | |
Cubitostrea tecticosta Gabb 1860 oyster
Agerostrea falcata Morton 1827 oyster | |
Ostrea sp. Linnaeus 1758 oyster
Ostrea aff. congesta Conrad 1843 oyster | |
Phelopteria sp. Stephenson 1953 pearl oyster | |
"Gervillia ensiformis" = Gervilliopsis ensiformis
"Gervillia ensiformis" = Gervilliopsis ensiformis Conrad 1858 oyster | |
Pinna sp. Linnaeus 1758 oyster | |
Anomia sp. Linnaeus 1758 jingle
Anomia argentaria Morton 1833 jingle | |
Entolium sp. n. sp., Syncyclonema sp.
Entolium sp. n. sp. Meek 1865 scallop
Syncyclonema sp. Meek 1864 scallop | |
"Idonearca sp." = Cucullaea (Idonearca)
"Idonearca sp." = Cucullaea (Idonearca) Conrad 1862 clam | |
Cuspidaria grovensis Stephenson 1941 clam | |
Tellina sp. n. sp.
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Veneridae indet. Rafinesque 1815 venus clam | |
Scaphopoda | |
Dentalium leve Stephenson 1923 tusk shell | |
Gastropoda | |
Ringicula sp. Deshayes 1838 snail | |
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Bellifusus sp. Stephenson 1941 snail | |
Naticidae indet. Guilding 1834 moon snail | |
Striaticostatum cf. bexarense Stephenson 1941 wentletrap | |
Cephalopoda | |
Sphenodiscus ? sp. Meek 1871 ammonite | |
Baculites sp. Lamarck 1799 ammonite |