USGS 15623, Cagnon Road: Late/Upper Maastrichtian, Texas
collected by L.W. Stephenson
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Echinoidea
- Spatangoida
- Hemiasteridae
|
||||||||||
|
Hemiaster bexari
Clark and Twitchell 1915
|
||||||||||
| synonym of Hemiaster wetherbyi | ||||||||||
| Hemiaster bexari Clark | ||||||||||
|
Gastropoda
- Neogastropoda
- Fasciolariidae
|
||||||||||
|
Hercorhyncus sp.
Conrad 1868
|
||||||||||
| Hercorhyncus spp. | ||||||||||
|
Bivalvia
- Pectinida
- Neitheidae
|
||||||||||
|
Neithea (Neithea) bexarensis
|
||||||||||
| Pecten (Neithea) bexarensis Stephenson | ||||||||||
|
Bivalvia
- Ostreida
- Gryphaeidae
|
||||||||||
|
Exogyra costata
(Say 1820)
|
||||||||||
| original and current combination Exogyra (Exogyra) costata | ||||||||||
| Exogyra costata Say | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Bexar |
| Coordinates: | 29.4° North, 98.7° West (view map) | ||||
| Paleocoordinates: | 35.1° North, 77.8° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| *Period: | Late/Upper Cretaceous | *Epoch: | Senonian |
| Key time interval: | Late/Upper Maastrichtian | Ammonoid zone: | Discoscaphites conradi |
| Age range of interval: | 72.10000 - 66.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Corsicana Marl |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | marl |
| Lithology description: shell marl poorly exposed with Gryphaea, Exogyra and other fossils. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Museum repositories: | USNM |
| Collectors: | L.W. Stephenson |
| Collection method comments: 15623: L. W. Stephenson and A. N. Sayre 1931, TxBureau 43: L. W. Stephenson and A. N. Sayre 1931, TxBureau 742: E. H. Sellards and R. L. Cannon 1922 | |
Metadata
| Database number: | 7562 | ||
| Authorizer: | M. Kosnik | Enterer: | M. Kosnik |
| Modifier: | M. Clapham | Research group: | GCP,marine invertebrate |
| Created: | 2000-07-18 12:00:01 | Last modified: | 2018-11-19 23:21:49 |
| Access level: | the public | Released: | 2000-07-18 12:00:01 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 444. | L. W. Stephenson. 1941. The larger invertebrate fossils of the Navarro group of Texas. The University of Texas Publication 4101:1-625 [M. Kosnik/M. Kosnik] |
Secondary references:
| 26335 | 1% 20600 | C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham] |
| 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] |