David's Bottom: Early Eocene, Texas
collected by H.Stenzel 1937

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Ostreida - Pinnidae
Atrina sp. Gray 1842
1 individual
Bivalvia - Ostreida - Gryphaeidae
1 individual
Bivalvia - Pectinida - Plicatulidae
2 individuals
Bivalvia - Carditida - Carditidae
1 individual
Claibornicardia linguinodifera milamensis
Bivalvia - Hiatellida - Hiatellidae
Panopea sp. (Menard 1807)
1 individual
Bivalvia - Cardiida - Tellinidae
1 individual
Bivalvia - Pholadida - Corbulidae
95 individuals
1 individual
Bivalvia - Nuculanida - Nuculanidae
1 individual
1 individual
Nuculana (Saccella) demissa
Bivalvia - Nuculida - Nuculidae
2 individuals
Gastropoda - Turritellidae
14 individuals
Gastropoda - Naticidae
Polinices sp. Monfort 1810
2 individuals
Gastropoda - Neogastropoda - Buccinidae
Terebrifusus sp. Conrad 1865
5 individuals
Gastropoda - Neogastropoda - Volutidae
22 individuals
Gastropoda - Neogastropoda - Cochlespiridae
Tropisurcula sp. Casey 1904
1 individual
Gastropoda - Neogastropoda - Terebridae
1 individual
Gastropoda - Neogastropoda - Turridae
Protosurcula gabbi Conrad 1865
1 individual
Pleuroliria sp. (Gregario 1890)
1 individual
1 individual
Surculoma penrosei tabulella
9 individuals
Gastropoda - Neogastropoda - Cancellariidae
1 individual
Trigonostoma (? Ventrilia) jonesae
Gastropoda - Skeneidae
Solariorbis sp. Conrad 1865
1 individual
see common names

Geography
Country:United States State/province:Texas County:Bastrop
Coordinates: 30.1° North, 97.3° West (view map)
Paleocoordinates:35.9° North, 74.5° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Paleogene Epoch: Eocene
Stage: Ypresian 10 m.y. bin: Cenozoic 2
Key time interval: Early Eocene
Age range of interval: 56 - 48.07 m.y. ago
Stratigraphy
Geological group:Claiborne Formation:Reklaw
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: poorly lithified "limestone"
Lithology description: poorly lithified carbonate, some fossils are pyritized
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body,replaced with pyrite
Size of fossils:mesofossils
Collection methods and comments
Collection methods:bulk,sieve,survey of museum collection
Minimum sieve size:2.000
Reason for describing collection:paleoecologic analysis
Museum repositories:TMM
Collectors: H.Stenzel Collection dates:1937
Collection method comments: J. Sessa sieved and identified this TMM bulk sample. Gastropod shells were only counted if they contained the apex of the shell; bivalve shells were only counted if they contained the umbo.
Metadata
Database number:89948
Authorizer:J. Sessa Enterer:L. Eccles
Modifier:J. Sessa Research group:GCP,marine invertebrate
Created:2009-06-21 17:20:43 Last modified:2025-02-22 15:12:02
Access level:the public Released:2009-06-21 17:20:43
Creative Commons license:CC0
Reference information

Primary reference:
29915. J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa]