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: P. 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 5555: authorized by Arnold Miller, entered by Karen Layou on 13.10.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Nuculana houstoni pointed nut clam
Nuculana corsicana pointed nut clam | |
Ostrea sp., "Ostrea mesenterica" = Lopha mesenterica
Ostrea sp. Linnaeus 1758 oyster
"Ostrea mesenterica" = Lopha mesenterica Morton 1834 oyster | |
Syncyclonema sp. Meek 1864 scallop | |
"Idonearca sp." = Cucullaea (Idonearca)
"Idonearca sp." = Cucullaea (Idonearca) Conrad 1862 clam | |
| |
| |
Corbula linteroidea clam | |
Gastropoda | |
Cancellaria sp. Lamarck 1799 snail | |
Acmaea ? sp. Eschscholtz 1830 limpet | |
Cephalopoda | |
Sphenodiscus ? sp. Meek 1871 ammonite | |
Baculites sp. Lamarck 1799 ammonite | |
Discoscaphites sp. Meek 1870 ammonite | |
Pisces | |
"Pisces indet." = Osteichthyes
|