San Juan Basin (non-specific): Puercan, New Mexico
collected by D. Baldwin, Cope 1881, 1884
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Procreodi
- Arctocyonidae
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Arctocyon ferox
(Cope 1883)
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Kondrashov and Lucas 2004 | |||||||||
Reptilia
- Testudines
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Aspideretes vegetus n. sp.
Gilmore 1919
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Vitek and Joyce 2015 | |||||||||
recombined as Plastomenus vegetus | ||||||||||
USNM 8539 - type | ||||||||||
Reptilia
- Testudines
- Trionychidae
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Amyda eloisae n. sp.
Gilmore 1919
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Vitek and Joyce 2015 | |||||||||
recombined as Trionyx eloisae | ||||||||||
USNM 8540 - type | ||||||||||
Aspideretes reesidei n. sp.
Gilmore 1919
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Vitek and Joyce 2015 | |||||||||
recombined as Trionyx reesidei | ||||||||||
USNM 8537 - type | ||||||||||
Reptilia
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Helagras prisciformis n. gen., n. sp.
Cope 1883
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1 specimen | |||||||||
AMNH 1628 (holotype), two posterior thoracic vertebrae; AMNH 1629, about 90 anterior and posterior thoracic vertebrae | ||||||||||
see common names |
Geography
Country: | United States | State/province: | New Mexico | County: | San Juan |
Coordinates: | 36.3° North, 108.1° West (view map) | ||||
Paleocoordinates: | 43.2° North, 87.2° West | ||||
Basis of coordinate: | estimated from map |
Time
Period: | Paleogene | Epoch: | Paleocene |
Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
Key time interval: | Puercan | ||
Age range of interval: | 66.00000 - 63.30000 m.y. ago |
Stratigraphy
Formation: | Nacimiento |
Stratigraphic resolution: | group of beds |
Lithology and environment
Primary lithology: | not reported |
Includes fossils? | Y |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis | ||
Collectors: | D. Baldwin, Cope | Collection dates: | 1881, 1884 |
Taxonomic list comments:Locality not given for AMNH specimen, but probably NM since it's "Puerco Fm". - Gilmore 1938 |
Metadata
Also known as: | Helagras prisciformes type locality | ||
Database number: | 125183 | ||
Authorizer: | M. Uhen, P. Barrett, J. Marcot, P. Mannion | Enterer: | M. Shalap, P. Mannion, T. Cleary, J. Marcot |
Modifier: | P. Mannion | ||
Created: | 2012-03-06 08:25:43 | Last modified: | 2021-06-02 06:11:12 |
Access level: | the public | Released: | 2012-03-06 08:25:43 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
14699. | C. W. Gilmore. 1938. Fossil snakes of North America. Geological Society of America Special Paper (9)1-96 [J. Head/J. Head] |
Secondary references:
76629 | P. E. Kondrashov and S. G. Lucas. 2004. Arctocyon from the Paleocene of North America. In S. G. Lucas, K. E. Zeigler, and P. E. Kondrashov (eds.), Paleogene Mammals 11-20 [J. Marcot/J. Marcot] | |
77033 | T. R. Lyson, H. Petermann, and I. M. Miller. 2021. A new plastomenid trionychid turtle, Plastomenus joycei, sp. nov., from the earliest Paleocene (Danian) Denver Formation of south-central Colorado, U.S.A. Journal of Vertebrate Paleontology e1913600:1-11 [E. Vlachos/E. Vlachos/P. Mannion] | |
63467 | N. S. Vitek and W. G. Joyce. 2015. A Review of the Fossil Record of New World Turtles of the Clade Pan-Trionychidae. Bulletin of the Peabody Museum of Natural History 56(2):185-244 [P. Mannion/P. Mannion] |