UCM 83268, Steele Butte: Early Campanian, Utah
collected by J. G. Eaton

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Actinopteri - Amiiformes - Amiidae
1 specimen
vertebra
Bryant 1988
Reptilia - Testudines
Chelonia indet. (Latreille 1800)
2 individuals
1 carapace fragment. Fossil from second individual unstated
Reptilia - Testudines - Adocidae
1 fragment
carapace fragment
Reptilia - Testudines - Trionychidae
1 fragment
carapace fragment
Reptilia - Testudines - Nanhsiungchelyidae
1 fragment
carapace fragment
Reptilia
1 fragment
carapace fragment
1 specimen
tooth partial
Reptilia - Hadrosauridae
1 specimen
tooth partial
Chondrichthyes
2 individuals
teeth; teeth fragments
2 individuals
1 tooth from each individual
Chondrichthyes - Rajiformes - Ptychotrygonidae
Ptychotrygon sp. Jaekel 1894
1 specimen
tooth
Chondrichthyes - Hybodontiformes - Hybodontidae
2 individuals
scales; teeth
Chondrichthyes - Chimaeriformes - Chimaeridae
2 individuals
4 teeth from one individual, ~20 teeth from the other
see common names

Geography
Country:United States State/province:Utah County:Garfield
Coordinates: 38.1° North, 110.9° West (view map)
Paleocoordinates:49.0° North, 73.3° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Campanian 10 m.y. bin: Cretaceous 7
Key time interval: Early Campanian
Age range of interval: 83.6 - 72.2 m.y. ago
Stratigraphy
Formation:Masuk Member:Lower
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:"cross stratification" sandstone
Secondary lithology: carbonaceous mudstone
Lithology description: "The base of the lower member consists of 13-66 ft (4-20 m) of coal and carbonaceous shale, commonly divided by thin ripple-laminated sandstones. The coal zone is overlain by 131 ft (40 m) of trough cross-stratified sandstones and associated flood-basin carbonaceous mudstones"
Environment:"floodplain"
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Fragmentation:frequent
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:field collection
Reason for describing collection:general faunal/floral analysis
Collectors:J. G. Eaton
Metadata
Database number:167530
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2015-03-20 12:42:44 Last modified:2025-02-22 15:12:02
Access level:the public Released:2015-03-20 12:42:44
Creative Commons license:CC0
Reference information

Primary reference:

25625.ETE J. G. Eaton. 1990. Stratigraphic revision of Campanian (Upper Cretaceous) rocks in the Henry Basin, Utah. The Mountain Geologist 27(1):27-38 [M. Carrano/M. Carrano]

Secondary references:

39778 L. J. Bryant. 1988. A new genus and species of Amiidae (Holostei; Osteichthyes) from the Late Cretaceous of North America, with comments on the phylogeny of the Amiidae. Journal of Vertebrate Paleontology 7(4):349-361 [G. Lloyd/G. Lloyd/M. Carrano]