St Johns, Kraterokheirodon: Norian, Arizona
collected by G. E. Hazen 1946
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Kraterokheirodon colberti
Irmis and Parker 2005
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1 specimen | |||||||||
| AMNH 4947, tooth | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Arizona | County: | Apache |
| Coordinates: | 34.5° North, 109.3° West (view map) | ||||
| Paleocoordinates: | 10.1° North, 48.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Norian | 10 m.y. bin: | Triassic 4 |
| Key time interval: | Norian | ||
| Age range of interval: | 227.00000 - 208.50000 m.y. ago |
Stratigraphy
| Formation: | Chinle | Member: | Bluewater Creek/Blue Mesa | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The Chinle in this area consists of Shinarump, Bluewater Creek, and Blue Mesa Members. The specimen was probably collected from either near the base of the Blue Mesa Member or near the top of the Bluewater Creek Member. Recent radiometric dates (Irmis & Mundil 2008) place all of these strata in the Norian. | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | fluvial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection methods: | surface (float),survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | AMNH | ||
| Collectors: | G. E. Hazen | Collection dates: | 1946 |
Metadata
| Database number: | 93497 | ||
| Authorizer: | R. Butler | Enterer: | R. Butler |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2010-01-20 04:32:47 | Last modified: | 2012-04-09 16:59:33 |
| Access level: | the public | Released: | 2010-01-20 04:32:47 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 31638. | R. B. Irmis and W. G. Parker. 2005. Unusual tetrapod teeth from the Upper Triassic Chinle Formation, USA. Canadian Journal of Earth Sciences 42:1339-1345 [R. Butler/R. Butler] |