Locality RAM V2021009: Campanian, Wyoming
collected by Frank Varriale, Alex Maya-Romero 2021
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Baenidae
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Neurankylus sp.
Lambe 1902
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1 specimen | |||||||||
| RAM 28750, an articulated but incomplete carapace and plastron. | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Park |
| Coordinates: | 44.5° North, 108.9° West (view map) | ||||
| Paleocoordinates: | 54.2° North, 67.2° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Campanian | ||
| Age range of interval: | 83.6 - 72.1 m.y. ago |
Stratigraphy
| Formation: | Mesaverde | ||||
| Stratigraphy comments: The Mesaverde Formation in the Oregon Basin crops out as thick, indurated sandstone hogbacks interspersed with thinner, less resistant mud- and claystones. |
Lithology and environment
| Primary lithology: | siltstone |
| Includes fossils? | Y |
| Lithology description: At the time of discovery, RAM 28750 had partially eroded out of the host siltstone, roughly parallel to the midline of the fossil. RAM V2021009 is situated within a 1 meter thick gray siltstone with small (~1 cm diameter) clay clasts, scattered vertebrate bone fragments, and carbonaceous plant debris, overlying a 1 meter thick coal seam. The siltstone was overlain by a grey mudstone, which was capped by a resistant brown sandstone ledge. Closer to the bone, the matrix became highly heterogeneous, consisting of siltstone, iron concretions, clay clasts, and small vertebrate teeth and bone fragments. | |
| Environment: | lacustrine - large |
| Geology comments: If correctly assigned to Neurankylus, the occurrence of RAM 28750 in a presumed non-fluvial depositional environment would be consistent with an inferred preferred habitat of standing water for this taxon. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | mechanical | ||
| Collection size: | 1 specimens | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Frank Varriale, Alex Maya-Romero | Collection dates: | 2021 |
| Collection method comments: Raymond M. Alf Museum of Paleontology | |||
Metadata
| Also known as: | Oregon Basin | ||
| Database number: | 236220 | ||
| Authorizer: | E. Vlachos | Enterer: | E. Vlachos |
| Modifier: | E. Vlachos | ||
| Created: | 2024-09-18 13:21:22 | Last modified: | 2024-09-18 14:55:47 |
| Access level: | the public | Released: | 2024-09-18 13:21:22 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 89497. | K. Y. Wu, J. Heuck, F. J. Varriale and A. Farke. 2023. A baenid turtle shell from the Mesaverde Formation (Campanian, Late Cretaceous) of Park County, Wyoming, USA. Peer Community Journal: Paleontology 3(e62):1-10 [E. Vlachos/E. Vlachos/E. Vlachos] |