USGS 17236: Late/Upper Campanian, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Nautilida
- Nautilidae
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Eutrephoceras planoventer
Stephenson 1941
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| Eutrephoceras planoventer Stephenson | ||||||||||
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Gastropoda
- Naticidae
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Gyrodes rotundus
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| Gyrodes rotundus Stephenson | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Navarro |
| Coordinates: | 32.1° North, 96.5° West (view map) | ||||
| Paleocoordinates: | 36.9° North, 68.8° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| *Period: | Late/Upper Cretaceous | *Epoch: | Senonian |
| *International age/stage: | Maastrichtian | ||
| Key time interval: | Late/Upper Campanian | Ammonoid zone: | Nostoceras hyatti |
| Age range of interval: | 83.60000 - 72.10000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Nacatoch Sand | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Stephenson (1941) had this unit as Maastrichtian, Cobban and Kennedy (1995) have updated it to uppermost Campanian via ammonite zonation. | |||||
Lithology and environment
| Primary lithology: | not reported |
| Lithology description: no entry | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection excludes: | all microfossils |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USGS |
| Collection method comments: W. A. Bramlette 1934 | |
Metadata
| Also known as: | An artificial cut 7 miles north of Chatfield, Navarro County. | ||
| Database number: | 7577 | ||
| Authorizer: | M. Kosnik | Enterer: | M. Kosnik |
| Modifier: | L. Eccles | Research group: | GCP,marine invertebrate |
| Created: | 2000-07-18 12:00:01 | Last modified: | 2010-10-14 18:54:42 |
| 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:
| 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] |