Sah Tah Wash tracksite, Four Corners: Kimmeridgian - Tithonian, Arizona
collected by W. L. Stokes 1952
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Pteraichnidae
|
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Pteraichnus saltwashensis n. gen., n. sp.
Stokes 1957
|
1 specimen | |||||||||
| Trackway | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Arizona | County: | Apache |
| Coordinates: | 36.9° North, 109.1° West (view map) | ||||
| Paleocoordinates: | 33.0° North, 56.2° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Late/Upper Jurassic |
| Key time interval: | Kimmeridgian - Tithonian | ||
| Age range of interval: | 154.80000 - 145.00000 m.y. ago |
Stratigraphy
| Formation: | Morrison | Member: | Salt Wash | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Originally identified as Morrison Formation; later (Lockley et al. 1995) suggested to be more likely from the Summerville Formation. Lockley & Mickelson (1997) noted that Pteraichnus is normally known from levels below the Morrison, but that the original stratigraphic interpretation (of lowermost Salt Wash Member, Morrison) may be correct for the type locality only. | |||||
Lithology and environment
| Primary lithology: | current ripples,medium,brown,gray sandstone |
| Secondary lithology: | mudstone |
| Includes fossils? | Y |
| Environment: | levee |
| Geology comments: "Small sand bar lying parallel with a stream" | |
Taphonomy
| Modes of preservation: | trace |
| Size of fossils: | macrofossils |
| Spatial orientation: | life position |
| Preservation of anatomical detail: | good |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | W. L. Stokes | Collection dates: | 1952 |
| Collection method comments: University of Utah collections | |||
Metadata
| Also known as: | Pteraichnus holotype, Stokes Locality | ||
| Database number: | 94678 | ||
| Authorizer: | R. Butler | Enterer: | R. Butler |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2010-03-09 00:45:34 | Last modified: | 2018-04-16 16:09:08 |
| Access level: | the public | Released: | 2010-03-09 00:45:34 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 32249. | W. L. Stokes. 1957. Pterodactyl tracks from the Morrison Formation. Journal of Paleontology 31:952-954 [R. Butler/R. Butler] |
Secondary references:
| 65404 | J. R. Foster and M. G. Lockley. 2006. The vertebrate ichnological record of the Morrison Formation (Upper Jurassic, North America). In J. R. Foster, S. G. Lucas (eds.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:203-216 [M. Carrano/M. Carrano] | |
| 31125 | M. Lockley, T. J. Logue, J. J. Moratalla, A. P. Hunt, R. J. Schultz and J. W. Robinson. 1995. The fossil trackway Pteraichnus is pterosaurian, not crocodilian: implications for the global distribution of pterosaur tracks. Ichnos 4:7-20 [R. Butler/R. Butler] | |
| 32290 | M. G. Lockley and D. L. Mickelson. 1997. Dinosaur and pterosaur tracks in the Summerville and Bluff (Jurassic) beds of eastern Utah and northeastern Arizona. In O. J. Anderson, B. S. Kues, & S. G. Lucas (eds.), New Mexico Geological Society, 48th Field Conference, Mesozoic Geology and Paleontology of the Four Corners Region 48:133-138 [R. Butler/R. Butler/M. Carrano] | |
| 62737 | W. A. S. Sarjeant. 1975. Fossil tracks and impressions of vertebrates. In R. D. Frey (ed.), The Study of Trace Fossils 283-324 [M. Carrano/M. Carrano] |