Wahweap Wash, UT (U1-17): Late/Upper Cenomanian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramidae indet.
Giebel 1852
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31 specimens | |||||||||
| originally entered as "informal Inoceramid indet."; changed by JA 21.2.07 | ||||||||||
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Inoceramus ? tenuistriatus
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3 specimens | |||||||||
| "tenuistriatus (?)" - originally entered as "Inoceramus tenuistriatus (?)" | ||||||||||
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Inoceramus pictus
Sowerby 1829
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1 specimen | |||||||||
| recombined as Inoceramus (Inoceramus) pictus | ||||||||||
| "pictus gracilestiatus" - originally entered as "Inoceramus pictus gracilestiatus" | ||||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostreidae indet.
Rafinesque 1815
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19 specimens | |||||||||
| originally entered as "Oyster spat " | ||||||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Pycnodonte newberryi
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1 specimen | |||||||||
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Bivalvia
- Ostreida
- Pteriidae
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Phelopteria sp.
Stephenson 1953
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1 specimen | |||||||||
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Bivalvia
- Lucinida
- Lucinidae
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Lucina sp.
Bruguière 1797
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36 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Baculitidae
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Sciponoceras sp.
Hyatt 1894
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2 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Acanthoceratidae
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Neocardioceras sp.
Spath 1926
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5 specimens | |||||||||
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Kamerunoceras sp.
Reyment 1954
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3 specimens | |||||||||
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Gastropoda
- Turritellidae
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Turritella sp.
Lamarck 1799
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1 specimen | |||||||||
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Gastropoda
- Naticidae
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Euspira concinna
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1 specimen | |||||||||
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Gastropoda
- Aporrhaidae
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Drepanocheilus ruidium
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185 specimens | |||||||||
| originally entered as "Drepanochilus ruidium" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Utah | County: | Kane |
| Coordinates: | 37.1° North, 111.6° West (view map) | ||||
| Paleocoordinates: | 38.5° North, 74.4° West | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| *Period: | Middle Cretaceous - Late/Upper Cretaceous | *Epoch: | Gallic |
| *International age/stage: | Late/Upper Cenomanian - Late/Upper Cenomanian | ||
| Key time interval: | Late/Upper Cenomanian | Zone: | Neocardioceras Ammonite |
| Age range of interval: | 100.50000 - 93.90000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Tropic Shale | ||||
| Local section: | U1 | Local bed: | 17 (Unit 21, lower) | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Bed horizon is the sample number not the lithologic unit number. The lithologic unit numbers that correspond to the sample numbers given can be found in reference for collection (Elder, 87). | |||||
Lithology and environment
| Primary lithology: | black,gray lithified calcareous "shale" | ||
| Environment: | marine indet. | Tectonic setting: | cratonic basin |
| Geology comments: Claystone, slightly silty, olive black to dark olive gray, mod. indurated, poorly laminar. Note: Section U1 constitutes interbedded limestones and shales, but this sedimentary structure is not reflected in the descriptions of each collection, as each is often a single bed, or a portion thereof. | |||
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,mechanical,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Bulk sample disaggregated in lab. | |
Metadata
| Database number: | 3333 | ||
| Authorizer: | C. Marshall | Enterer: | S. Low |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 1999-07-29 20:31:05 | Last modified: | 2017-07-28 16:07:56 |
| Access level: | the public | Released: | 1999-07-29 20:31:05 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 93. | W. P. Elder. 1987. The paleoecology of the Cenomanian-Turonian (Cretaceous) stage boundary extinctions at Black Mesa, Arizona. Palaios 2(1):24-40 [C. Marshall/S. Low/A. Clement] |