Fox Mesa: Kimmeridgian - Tithonian, Wyoming
collected by E. Kvale 1997
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Ornithopoda indet.
Marsh 1881
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| eggshell | ||||||||||
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Reptilia
- Theropoda
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Theropoda indet.
Marsh 1881
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Reptilia
- Sphenodontia
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Sphenodontia indet.
(Jaekel 1910)
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Reptilia
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Opisthiamimus gregori n. gen., n. sp.
DrMar et al. 2022
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DrMar et al. 2022 | 1 specimen | ||||||||
| Holotype: USNM PAL 722041, an articulated partial skull and skeleton | ||||||||||
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Mammalia
- Pantotheria
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Eupantotheria indet.
Kermack and Musset 1958
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Mammalia
- Symmetrodonta
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Symmetrodonta indet.
Simpson 1925
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Mammalia
- Multituberculata
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Multituberculata indet.
Cope 1884
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Big Horn |
| Coordinates: | 44.5° North, 107.9° West (view map) | ||||
| Paleocoordinates: | 40.3° North, 53.2° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Late Jurassic |
| Stage: | Kimmeridgian - Tithonian | 10 m.y. bin: | Jurassic 5 - Jurassic 6 |
| Key time interval: | Kimmeridgian - Tithonian | ||
| Age range of interval: | 154.8 - 145 m.y. ago |
Stratigraphy
| Formation: | Morrison |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | green,red silty claystone |
| Includes fossils? | Y |
| Lithology description: "red and green mottled silty claystone" | |
| Environment: | "floodplain" |
| Geology comments: "floodplain succession" | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | abundant |
| Disassociated major elements: | many |
| Disassociated minor elements: | many |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | bulk,selective quarrying,surface (float),surface (in situ),mechanical,sieve,field collection | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | E. Kvale | Collection dates: | 1997 |
Metadata
| Also known as: | USNM PAL 720475 | ||
| Database number: | 55333 | ||
| Authorizer: | M. Carrano, E. Dunne | Enterer: | M. Carrano, E. Dunne |
| Modifier: | E. Dunne | Research group: | vertebrate |
| Created: | 2005-10-10 13:02:53 | Last modified: | 2022-09-23 11:09:37 |
| Access level: | the public | Released: | 2005-10-10 13:02:53 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 14831. | ETE | M. Brett-Surman, S. Jabo, P. A. Kroehler, M. T. Carrano, and E. P. Kvale. 2005. A new microvertebrate assemblage from the Upper Jurassic Morrison Formation, including mammals, theropods, and sphenodontians. Journal of Vertebrate Paleontology 25(3, suppl.):39A [M. Carrano/M. Carrano] |
Secondary references:
| 82679 | D. G. DrMar Jr., M. E. H. Jones, and M. T. Carrano. 2022. A nearly complete skeleton of a new eusphenodontian from the Upper Jurassic Morrison Formation, Wyoming, USA, provides insight into the evolution and diversity of Rhynchocephalia (Reptilia: Lepidosauria). Journal of Systematic Palaeontology 20(1) [E. Dunne/E. Dunne] |