YPM 63-19, Crooked Creek: Middle Albian - Early/Lower Cenomanian, Wyoming
collected by J. Ostrom 1963-1964
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Nodosauridae
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? Sauropelta sp.
Ostrom 1970
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7 specimens | |||||||||
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Sauropelta edwardsi
Ostrom 1970
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62 specimens | |||||||||
| corrected as Sauropelta edwardsorum | ||||||||||
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Reptilia
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Tenontosaurus tilletti
Ostrom 1970
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1 specimen | |||||||||
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Reptilia
- Dromaeosauridae
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Deinonychus antirrhopus
Ostrom 1969
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5 specimens | |||||||||
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Reptilia
- Caenagnathidae
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? Microvenator celer
Ostrom 1970
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1 specimen | |||||||||
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Reptilia
- Carcharodontosauridae
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Theropoda indet.
Marsh 1881
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3 specimens | |||||||||
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= ? Acrocanthosaurus atokensis
Stovall and Langston 1950
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D'Emic et al. 2012 | |||||||||
| YPM 5377, tooth | ||||||||||
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Reptilia
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Neosauropoda indet.
Bonaparte 1986
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D'Emic and Foreman 2012 | 1 specimen | ||||||||
| YPM 5107 | ||||||||||
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Macronaria indet.
Sereno 1997
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D'Emic and Foreman 2012 | 1 specimen | ||||||||
| YPM 5151 | ||||||||||
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Sauropoda indet.
Marsh 1878
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7 specimens | |||||||||
| YPM 5147, 5103-5104, 5089, 5096, 5087, 5097 | ||||||||||
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= Sauroposeidon proteles
Wedel et al. 2000
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D'Emic and Foreman 2012 | |||||||||
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Reptilia
- Crocodylia
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Crocodylia indet.
(Owen 1842)
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14 specimens | |||||||||
| YPM 5445, caudal; 5344, 2 teeth; field no. 64-136, tooth; 5342, tooth; 5355, tooth; 5447, 3 teeth; 5382, caudal; 5359, 3 teeth; 5110, caudal; | ||||||||||
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Reptilia
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Mesosuchia indet.
Huxley 1875
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Database 2011 | 30 specimens | ||||||||
| invalid subgroup of Mesoeucrocodylia | ||||||||||
| YPM 5354, tooth; 5381, atlas, 9 teeth, fragment; 5363, tooth; 5372, tooth; 5362, tooth; 5361, 2 teeth; 5364, 4 teeth; 5440, tooth; 5353, 8 teeth | ||||||||||
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Reptilia
- Testudines
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Testudines indet.
Batsch 1788
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Database 2011 | 1 specimen | ||||||||
| YPM field no. 257 | ||||||||||
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Reptilia
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Naomichelys speciosa
Hay 1908
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10 specimens | |||||||||
| YPM 5385, right epiplastron; 9780, 8 shell fragments; 5433, pleural | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Big Horn |
| Coordinates: | 45.0° North, 108.3° West (view map) | ||||
| Paleocoordinates: | 44.3° North, 66.2° West | ||||
| Basis of coordinate: | stated in text | ||||
| Altitude: | 1222 meters | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous |
| Key time interval: | Middle Albian - Early/Lower Cenomanian |
| Age range of interval: | 109.90000 - 93.90000 m.y. ago |
Stratigraphy
| Formation: | Cloverly | Member: | Himes | ||
| Local section: | Crooked Creek | Local bed: | 29 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: upper part of member = Ostrom's unit VII; 0-8 ft above Unit VI
D'Emic et al. 2019: In the mid–late Albian to early Cenomanian (ca. 109–98 Ma), sediment sourced from the east was deposited as the Himes Member and Greybull Sandstone. | |||||
Lithology and environment
| Primary lithology: | claystone |
| Includes fossils? | Y |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | YPM | ||
| Collectors: | J. Ostrom | Collection dates: | 1963-1964 |
Metadata
| Also known as: | site 118 | ||
| Database number: | 50498 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2005-05-16 13:26:14 | Last modified: | 2022-01-27 06:32:47 |
| Access level: | the public | Released: | 2005-05-16 13:26:14 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 13525. | ETE | J. H. Ostrom. 1970. Stratigraphy and paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin area, Wyoming and Montana. Peabody Museum Bulletin 35:1-234 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 42441 | M. D. D'Emic and B. Z. Foreman. 2012. The beginning of the sauropod dinosaur hiatus in North America: insights from the Lower Cretaceous Cloverly Formation of Wyoming. Journal of Vertebrate Paleontology 32(4):883-902 [M. Carrano/M. Carrano] | |
| 81898 | M. D. D'Emic, K. M. Melstrom, and D. R. Eddy. 2012. Paleobiology and geographic range of the large-bodied Cretaceous theropod dinosaur Acrocanthosaurus atokensis. Palaeogeography, Palaeoclimatology, Palaeoecology 333-334:13-23 [M. Carrano/M. Carrano/M. Carrano] | |
| 38581 | Y. P. M. Database. 2011. YPM collections database. Yale Peabody Museum of Natural History collections [M. Carrano/M. Carrano] | |
| 79303 | M. D. D’Emic, B. Z. Foreman, N. A. Jud, B. B. Britt, M. Schmitz and J. L. Crowley. 2019. Chronostratigraphic Revision of the Cloverly Formation (Lower Cretaceous, Western Interior, USA). Bulletin of the Peabody Museum of Natural History 60(1):3-40 [P. Mannion/G. Varnham/G. Varnham] | |
| 14102 | ETE | W. D. Maxwell and J. H. Ostrom. 1995. Taphonomy and paleobiological implications of Tenontosaurus-Deinonychus associations. Journal of Vertebrate Paleontology 15(4):707-712 [M. Carrano/M. Carrano/M. Carrano] |