Muller Canyon: Illyrian, Nevada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Augustasaurus hagdorni n. gen., n. sp.
Sander et al. 1997
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1 individual | |||||||||
| FMNH PR 1974, anterior half of skeleton including skull | ||||||||||
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Reptilia
- Mixosauridae
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Mixosaurus callawayi n. sp.
Schmitz et al. 2004
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Schmitz et al. 2004 | |||||||||
| CMC VP 7275 (holotype), FMNH PR 1804 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Pershing |
| Coordinates: | 40.0° North, 117.6° West (view map) | ||||
| Paleocoordinates: | 10.5° North, 41.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Middle Triassic |
| Stage: | Anisian | 10 m.y. bin: | Triassic 2 |
| Key time interval: | Illyrian | Ammonoid zone: | Gymnotoceras rotelliformis |
| Age range of interval: | 243.8 - 242 m.y. ago |
Stratigraphy
| Geological group: | Star Peak | Formation: | Favret | Member: | Fossil Hill |
| Stratigraphy comments: "Basal Gymnotoceras rotelliformis is approximately the tethyan Paraceratities trinodotus zone" [Illyrian; Anisian] | |||||
Lithology and environment
| Primary lithology: | planar lamination,brown lithified calcareous mudstone |
| Includes fossils? | Y |
| Environment: | marginal marine indet. |
Taphonomy
| Modes of preservation: | body,concretion |
| Size of fossils: | macrofossils |
| Spatial orientation: | preferred |
| Preservation of anatomical detail: | good |
| Fragmentation: | occasional |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | selective quarrying,surface (in situ) |
| Collection size: | 1 individuals |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | FMNH |
Metadata
| Database number: | 98011 | ||
| Authorizer: | M. Carrano, A. Dunhill | Enterer: | H. Street, B. Allen |
| Modifier: | R. Benson | Research group: | vertebrate |
| Created: | 2010-09-15 13:02:37 | Last modified: | 2013-09-06 09:24:01 |
| Access level: | the public | Released: | 2010-09-15 13:02:37 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 33891. | P. M. Sander, O. C. Rieppel, and H. Bucher. 1997. A new pistosaurid (Reptilia: Sauropterygia) from the Middle Triassic of Nevada and its implications for the origin of the plesiosaurs. Journal of Vertebrate Paleontology 17(3):526-533 [M. Carrano/H. Street] |
Secondary references:
| 66919 | L. Schmitz, P. M. Sander, G. W. Storrs and O. Rieppel. 2004. New Mixosauridae (Ichthyosauria) from the Middle Triassic of the Augusta Moutnains (Nevada, USA) and their implications for mixosaur taxonomy. Palaeontographica Abteilung A 270:133-162 [A. Dunhill/B. Allen] |