Sohl and Koch OFR # 542: Maastrichtian, Arkansas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Lithophagidae indet.
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| Lithophagid borings | ||||||||||
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Trochocyathidae indet.
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| Trochocyathid coral | ||||||||||
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Demospongiae
- Clavulina
- Clionaidae
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Cliona sp.
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| Clione sp. | ||||||||||
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unclassified
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Vertebrata indet.
Lamarck 1801
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| Shark parts | ||||||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Exogyra costata
(Say 1820)
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3 specimens | |||||||||
| original and current combination Exogyra (Exogyra) costata | ||||||||||
| Exogyra costata Say | ||||||||||
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Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana whitfieldi
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1 specimen | |||||||||
| Nuculana whitfieldi (Gardner) | ||||||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites sp.
Lamarck 1799
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1 specimen | |||||||||
| Baculites sp. | ||||||||||
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Cephalopoda
- Ammonitida
- Scaphitidae
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Discoscaphites sp.
Meek 1870
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1 specimen | |||||||||
| Discoscaphites sp. | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Arkansas | County: | Hempstead |
| Coordinates: | 33.7° North, 93.7° West (view map) | ||||
| Paleocoordinates: | 38.4° North, 70.8° West | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| *Period: | Late/Upper Cretaceous | *Epoch: | Late/Upper Senonian |
| *International age/stage: | Middle - Late/Upper Maastrichtian | ||
| Key time interval: | Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Arkadelphia marl | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Haustator bilira assemblage zone. | |||||
Lithology and environment
| Primary lithology: | gray claystone | ||
| Environment: | marine indet. | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body,original aragonite,original calcite |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | paleoecologic analysis |
| Museum repositories: | USGS |
| Collection method comments: Stephenson collection | |
Metadata
| Also known as: | Hope; USGS # 7467 : 8213 | ||
| Database number: | 4392 | ||
| Authorizer: | M. Kosnik | Enterer: | M. Kosnik |
| Modifier: | J. Sessa | Research group: | marine invertebrate |
| Created: | 1999-08-14 13:00:00 | Last modified: | 2009-10-10 20:06:43 |
| Access level: | the public | Released: | 1999-08-14 13:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 282. | N. F. Sohl and C. F. Koch. 1984. Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain. USGS Open File Report 84-687:1-282 [M. Kosnik/M. Kosnik] |