Muddy Creek Plesiosaur (Middle Horizon): Late/Upper Cenomanian, Utah
collected 1996
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda
- Ammonitida
- Acanthoceratidae
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Metoicoceras geslinianum
(d'Orbigny 1841)
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Gastropoda
- Turritellidae
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Turritella whitei
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Bivalvia
- Ostreida
- Gryphaeidae
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Pycnodonte newberryi
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Reptilia
- Plesiosauria
- Polycotylidae
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? Pliosauroidea indet.
Welles 1943
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= Trinacromerum ? bentonianum
Cragin 1888
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Albright et al. 2007 | |||||||||
UMNH Accession Number 96.10: partial skeleton from the tail and trunk region, consisting of two sections of vertebrae in articulation, one with approximately 18 vertebrae, the other with approximately 30 vertebrae; isolated vertebrae, two teeth, a paddle bone, and additional unidentified elements | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Utah | County: | Kane |
Coordinates: | 37.3° North, 112.7° West (view map) | ||||
Paleocoordinates: | 39.0° North, 75.4° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | small collection |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
*Period: | Late/Upper Cretaceous | *Epoch: | Gallic |
*International age/stage: | Middle - Late/Upper Cenomanian | ||
Key time interval: | Late/Upper Cenomanian | Ammonoid zone: | Sciponoceras gracile |
Age range of interval: | 99.60000 - 93.50000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Tropic Shale | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: upper part of the Sciponoceras gracile Ammonoid Biozone, late Cenomanian |
Lithology and environment
Primary lithology: | concretionary lime mudstone |
Includes fossils? | Y |
Lithology description: mudstone with limestone nodules | |
Environment: | marine indet. |
Geology comments: partial skeleton of a plesiosaur and associated invertebrates |
Taphonomy
Modes of preservation: | body,concretion |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | surface (in situ),field collection |
Reason for describing collection: | biostratigraphic analysis | Collection dates: | 1996 |
Collection method comments: UMNH, University of Utah Museum of Natural History, Salt Lake City, Utah, USA |
Metadata
Also known as: | UGS Loc. 42Ka008VI | ||
Database number: | 5609 | ||
Authorizer: | J. Alroy, R. Benson | Enterer: | J. Alroy, R. Benson |
Modifier: | M. Carrano | Research group: | marine invertebrate |
Created: | 1999-10-31 14:30:49 | Last modified: | 2023-07-26 08:19:48 |
Access level: | the public | Released: | 1999-10-31 14:30:49 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
339. | D. D. Gillette, M. C. Hayden, and A. L. Titus. 1999. Occurrence and biostratigraphic framework of a plesiosaur from the Upper Cretaceous Tropic Shale of southwestern Utah. Utah Geological Survey Miscellaneous Publication 99(1):269-273 [J. Alroy/J. Alroy/M. Uhen] |
Secondary references:
33381 | L. B. Albright, D. D. Gillette, and A. L. Titus. 2007. Plesiosaurs from the Upper Cretaceous (Cenomanian-Turonian) Tropic Shale of southern Utah, part 2: Polycotylidae. Journal of Vertebrate Paleontology 27(1):41-58 [M. Carrano/H. Street] | |
85420 | L. B. Albright, D. D. Gillette, and A. L. Titus. 2013. Fossil vertebrates from the Tropic Shale (Upper Cretaceous), southern Utah. In A. L. Titus & M. A. Loewen (ed.), At the Top of the Grand Staircase: The Late Cretaceous of Southern Utah 536-562 [M. Carrano/M. Carrano] |