Whitmore Wash, USGS 22235-PC: Morrowan, Arizona
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Bivalvia
- Pterioida
|
||||||||||
|
Pterioida indet.
Newell 1965
|
||||||||||
| Myalinid | ||||||||||
|
Bivalvia
- Pectinida
- Aviculopectinidae
|
||||||||||
|
Aviculopecten gravidus
|
||||||||||
|
Gastropoda
- Bellerophontida
- Bellerophontidae
|
||||||||||
|
Bellerophontidae indet.
M'Coy 1851
|
||||||||||
|
Strophomenata
- Orthotetida
- Derbyiidae
|
||||||||||
|
Derbyia sp.
Waagen 1884
|
||||||||||
|
Rhynchonellata
- Athyridida
- Athyrididae
|
||||||||||
|
Composita ovata
Mather 1915
|
||||||||||
|
Rhynchonellata
- Spiriferida
- Spiriferidae
|
||||||||||
|
Anthracospirifer tanoensis
|
||||||||||
|
Rhynchonellata
- Spiriferinida
- Punctospiriferidae
|
||||||||||
|
Punctospirifer transversus
(McChesney 1860)
|
||||||||||
|
Stenolaemata
- Cystoporata
|
||||||||||
|
Cystoporata indet.
Astrova 1964
|
||||||||||
| Bifolate Fistuliporoid | ||||||||||
|
Stenolaemata
- Trepostomata
|
||||||||||
|
Trepostomata indet.
Ulrich 1882
|
||||||||||
| Ramose | ||||||||||
|
Trilobita
- Proetida
- Phillipsiidae
|
||||||||||
|
Paladin sp.
Weller 1936
|
||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Arizona |
| Coordinates: | 36.2° North, 113.2° West (view map) | ||
| Paleocoordinates: | 1.2° North, 43.5° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Carboniferous | Epoch: | Pennsylvanian |
| Stage: | Bashkirian | 10 m.y. bin: | Carboniferous 4 |
| Key time interval: | Morrowan | ||
| Age range of interval: | 323.20000 - 318.40000 m.y. ago |
Stratigraphy
| Geological group: | Supai | Formation: | Watahomigi | ||
| Local section: | Whitmore Wash | ||||
| Regional section: | Grand Canyon | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: The Watahomigi is comprised of three informal units: a lower slope unit, a middle cliff unit, and an upper slope unit. | |||||
Lithology and environment
| Primary lithology: | very fine,fine lithified conglomeratic "limestone" |
| Includes fossils? | Y |
| Lithology description: Conglomerate, gray to brown, thin-bedded (4-12 in); grades into conglomeratic limestone; contains many fossils, concentrated locally, also scattered among pebbles. Matrix: aphantic to fine grained limestone. Gravel: mostly durable rocks including flint, chert, and quartzite; some dark-gray and light-gray limestone and red-brown siltstone; largely 0.25-0.5 in. in diameter, maximum 1 in.; subangular to rounded. | |
| Environment: | shallow subtidal indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USGS |
Metadata
| Also known as: | Middle cliff unit | ||
| Database number: | 42711 | ||
| Authorizer: | J. Alroy | Enterer: | C. Simpson |
| Modifier: | C. Simpson | Research group: | marine invertebrate |
| Created: | 2004-08-04 14:16:14 | Last modified: | 2004-08-04 17:16:14 |
| Access level: | the public | Released: | 2004-08-04 14:16:14 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 11207. | E. D. McKee. 1982. The Supai Group of the Grand Canyon. United States Geological Survey Professional Paper 1173 [J. Alroy/C. Simpson/C. Simpson] |