Locality 3, NE of Justin, Denton County, Denton Biostrome, Biofacies A: Late/Upper Albian, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Globigerinidae
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Globigerina washitaensis
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Lituolida
- Lituolidae
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Gaudryina (Gaudryina) cushmani
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Haplophragmoiidae
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Placopsilina minima
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Globothalamea
- Rotaliida
- Discorbidae
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Valvulineria asterigerinoides
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Discorbis minima
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Nodosariata
- Nodosariida
- Nodosariidae
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Citharina kochii
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| C. kochii var. striolata | ||||||||||
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Nodosariata
- Vaginulinida
- Vaginulinidae
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Lenticulina cyprina
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Lenticulina gaultina
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Echinoidea
- Cidaroida
- Cidaridae
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Cidaris (Stereocidaris) hemigranosus
Shumard 1860
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| recombined as Leiocidaris hemigranosus | ||||||||||
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Stenolaemata
- Cyclostomata
- Frondiporidae
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Discofascigera sp.
d'Orbigny 1853
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Stenolaemata
- Cyclostomata
- Petaloporidae
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Laterocavea sp.
d'Orbigny 1853
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Gymnolaemata
- Cheilostomata
- Calloporidae
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Membraniporidra sp.
Canu and Bassler 1917
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Bivalvia
- Pectinida
- Pectinidae
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Pecten (Neithea) texanus
Gabb 1861
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| synonym of Camptonectes virgatus | ||||||||||
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Bivalvia
- Pectinida
- Plicatulidae
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Plicatula dentonensis
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea (Lopha) quadriplicata
Kues 1997
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| recombined as Peilinia quadriplicata | ||||||||||
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Ostrea (Arctostrea) carinata
Lamarck 1806
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| recombined as Rastellum carinatum | ||||||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Gryphaea washitaensis
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Ostracoda
- Podocopida
- Trachyleberididae
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Cythereis dentonensis
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Ostracoda
- Platycopida
- Cytherellidae
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Cytherella comanchensis
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Denton |
| Coordinates: | 33.2° North, 97.2° West (view map) | ||||
| Paleocoordinates: | 30.4° North, 59.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Late/Upper Albian | ||
| Age range of interval: | 106.20000 - 100.50000 m.y. ago |
Stratigraphy
| Geological group: | Washita | Formation: | Denton | ||
| Local section: | Locality 3 | Local bed: | A | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Biofacies A; oyster biostrome at the top of the Denton Fm, Washita Group, Comanche Series | |||||
Lithology and environment
| Primary lithology: | lithified "limestone" |
| Secondary lithology: | lithified "shale" |
| Lithology description: lower beds: limestone, upper beds: shale | |
| Environment: | open shallow subtidal |
| Geology comments: probably shallow neritic, normal marine salinity | |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 65714 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | S. Nurnberg | Research group: | marine invertebrate |
| Created: | 2006-09-25 01:14:56 | Last modified: | 2006-09-25 04:17:00 |
| Access level: | the public | Released: | 2006-09-25 01:14:56 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18885. | L. R. Laughbaum. 1960. A Paleoecologic Study of the Upper Denton Formation, Tarrant, Denton, and Cooke Counties, Texas. Journal of Paleontology 34(6):1183-1197 [M. Aberhan/S. Nurnberg] |