Collinson Ridge (42.5 metres above base): Early/Lower Triassic, Antarctica
collected 1977-
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Anomodontia
|
||||||||||
|
Myosaurus gracilis
Hammer and Cosgriff 1981
|
2 individuals | |||||||||
| WSU 0975, nearly complete skull. WSU 0976, lower jaw | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Antarctica |
| Coordinates: | 85.2° South, 175.5° West (view map) |
| Paleocoordinates: | 81.8° South, 69.3° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Early/Lower Triassic |
| 10 m.y. bin: | Triassic 1 | ||
| Key time interval: | Early/Lower Triassic | ||
| Age range of interval: | 251.90200 - 247.20000 m.y. ago |
Stratigraphy
| Geological group: | Beacon | Formation: | Fremouw | ||
| Local section: | Collinson Ridge | Local bed: | 42.5 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Lower part of the Fremouw Formation, Early Triassic age | |||||
Lithology and environment
| Primary lithology: | gray,green siltstone | ||
| Includes fossils? | Y | ||
| Lithology description: "greenish-gray siltstone" | |||
| Environment: | "floodplain" | Tectonic setting: | foreland basin |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis | Collection dates: | 1977-78 |
| Collection method comments: WSU: Wayne State University | |
Metadata
| Also known as: | Cumulus Hills | ||
| Database number: | 105602 | ||
| Authorizer: | R. Butler | Enterer: | R. Butler | Research group: | vertebrate |
| Created: | 2011-02-22 20:35:38 | Last modified: | 2011-02-22 03:35:38 |
| Access level: | the public | Released: | 2011-02-22 20:35:38 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 35269. | W. R. Hammer and J. W. Cosgriff. 1981. Myosaurus gracilis, an anomodont reptile from the Lower Triassic of Antarctica and South Africa. Journal of Paleontology 55(2):410-424 [R. Butler/R. Butler] |