Lost Bob East, DMNH loc. 4629: Norian - Rhaetian, Colorado

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Dinosauriformes indet. Novas 1992
1 specimen
DMNH EPV.63875 (R tibia)
Kwanasaurus williamparkeri Martz and Small 2019
6 specimens
DMNH EPV.125921 (L maxilla); DMNH EPV.125923 (R maxilla); DMNH EPV.65878 (L dentary); DMNH EPV.125922 (tooth); DMNH EPV.63874 (L femur); DMNH EPV.125924 (R femur)
see common names

Geography
Country:United States State/province:Colorado County:Garfield
Coordinates: 39.9° North, 106.9° West (view map)
Paleocoordinates:15.8° North, 45.4° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Triassic Epoch: Late Triassic
Stage: Norian - Rhaetian 10 m.y. bin: Triassic 4
Key time interval: Norian - Rhaetian
Age range of interval: 227 - 201.4 m.y. ago
Stratigraphy
Formation:Chinle
Stratigraphic resolution:bed
Stratigraphy comments: "The tetrapod assemblage is regarded as middle–late Norian in age (Revueltian land vertebrate faunachron)" - Pardo et al. (2017)
From the informally named "red siltstone member"
Lithology and environment
Primary lithology:red lithified siltstone
Secondary lithology: conglomerate
Includes fossils?Y
Includes fossils?Y
Lithology description: "Indurated red siltstone"
Environment:coarse channel fill
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Abundance in sediment:common
Associated major elements:some
Disassociated major elements:many
Disassociated minor elements:many
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:DMNH
Metadata
Database number:206270
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2019-11-06 11:17:06 Last modified:2019-11-06 11:21:58
Access level:the public Released:2019-11-06 11:17:06
Creative Commons license:CC BY
Reference information

Primary reference:

70805. J. W. Martz and B. J. Small. 2019. Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae). PeerJ 7:e7551:1-71 [M. Carrano/M. Carrano/M. Carrano]