Sycamore Creek, Fort Worth [Weno Limestone]: Late Albian, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Brancoceratidae
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Mortoniceras (Subschloenbachia) rostratum
(Sowerby 1817)
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Mortoniceras (Angolaites) drakei
(Young 1957)
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| (7 measurements) | ||||||||||
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Cephalopoda
- Ammonitida
- Engonoceratidae
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Engonoceras serpentinum
(Cragin 1900)
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Cephalopoda
- Ammonitida
- Anisoceratidae
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Anisoceras perarmatum
Pictet and Campiche 1861
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Cephalopoda
- Ammonitida
- Turrilitidae
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Mariella (Wintonia) sp.
(Adkins 1928)
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Tarrant |
| Coordinates: | 32.8° North, 97.3° West (view map) | ||||
| Paleocoordinates: | 30.1° North, 59.8° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Late Albian | ||
| Age range of interval: | 106.2 - 100.5 m.y. ago |
Stratigraphy
| Geological group: | Washita | Formation: | Weno | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Weno Formation, which overlies the Denton Clay (Late Albian) and is overlain by the Pawpaw Formation. AGE: Late Albian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within formation. | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Limestone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | carbonate indet. |
| Geology comments: ENVIRONMENT: Not environmental data reported. Presumably shallow marine carbonate setting. | |
Taphonomy
| Modes of preservation: | cast,mold/impression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | poor |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | surface (in situ),survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | TMM,USNM |
| Collection method comments: COLLECTORS: Multiple collectors. REPOSITORY: Several, including the USNM and Texas Memorial Museum (TMM). | |
| Taxonomic list comments:COVERAGE: Limited to ammonoids described in taxonomic publication. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 82364 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | M. Carrano | Research group: | marine invertebrate |
| Created: | 2008-07-26 14:56:57 | Last modified: | 2021-06-28 14:17:18 |
| Access level: | the public | Released: | 2008-07-26 14:56:57 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27752. | W. J. Kennedy, W. A. Cobban, A. S. Gake, J. M. Hancock, and N.H. Landman. 1998. Ammonites from the Weno Limestone (Albian) in Northeast Texas. American Museum Novitates 3236:1-46 [A. Hendy/A. Hendy] |