Baylor County (Seymour): Cisuralian, Texas
collected by Jacob Boll 1880
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes
- Hybodontiformes
- Hybodontidae
|
|||||||
"Hybodus" regularis n. sp.
Cope 1891
|
|||||||
replaced by Hybodus copei | |||||||
Chondrichthyes
- Xenacanthida
- Orthacanthidae
|
|||||||
Didymodus compressus
(Newberry 1856)
|
Cope 1884 | 12 specimens | |||||
recombined as Orthacanthus compressus | |||||||
Didymodus platypternus
(Cope 1884)
|
Cope 1884 | ||||||
original and current combination Orthacanthus platypternus | |||||||
see common names |
Geography
Country: | United States | State/province: | Texas |
Coordinates: | 33.6° North, 99.3° West (view map) | ||
Paleocoordinates: | 0.2° South, 30.0° West | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | outcrop |
Time
Period: | Permian | Epoch: | Cisuralian |
Key time interval: | Cisuralian | ||
Age range of interval: | 298.90000 - 272.30000 m.y. ago |
Stratigraphy
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: According to Romer (1942), the specimen cannot be Triassic because (1) there are no Triassic beds within 100 miles of Seymour, (2) no limestone strata are recorded in the Texas Triassic, (3) Boll never worked in Triassic regions, and (4) fossiliferous Triassic beds were not discovered until years after Boll's death. |
Lithology and environment
Primary lithology: | lithified "limestone" |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | taxonomic analysis | ||
Museum repositories: | AMNH | ||
Collectors: | Jacob Boll | Collection dates: | 1880 |
Metadata
Database number: | 132969 | ||
Authorizer: | M. Clapham | Enterer: | P. Vazquez |
Modifier: | P. Vazquez | Research group: | vertebrate |
Created: | 2012-08-30 08:49:38 | Last modified: | 2013-11-25 13:02:06 |
Access level: | the public | Released: | 2012-08-30 08:49:38 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
47800. | E. D. Cope. 1891. On the characters of some Paleozoic fishes. Proceedings of the United States National Museum 14:447-463 [M. Clapham/M. Clapham/M. Clapham] |
Secondary references:
47909 | E. D. Cope. 1884. On the structure of the skull in the Elasmobranch genus Didymodus. Proceedings of the American Philosophical Society 21:572-590 [M. Clapham/P. Vazquez] |