Sunset to Dawn Two (UW V-81076): Judithian, Wyoming
collected 1981

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma sp. Jepsen 1940
Mammalia - Alphadontidae
Alphadon attaragos n. sp. Lillegraven and McKenna 1986
(1 measurement)
Alphadon halleyi Sahni 1972
includes "A. sahnii" (1 measurement)
Alphadon russelli Fox 1979
    = Turgidodon russelli Fox 1979
Alroy 2002
Mammalia
Alphadon lulli Clemens 1966
    = Protalphadon lulli Clemens 1966
Alroy 2002
Reptilia - Mosasauridae
Tylosaurinae indet. Wiliston 1895
DeMar and Breithaupt 2006 1 specimen
UW 34832
Actinopteri - Ichthyodectiformes - Ichthyodectidae
Xiphactinus vetus (Leidy 1856)
DeMar and Breithaupt 2006 1 specimen
see common names

Geography
Country:United States State/province:Wyoming County:Washakie
Coordinates: 44.1° North, 107.8° West (view map)
Paleocoordinates:51.0° North, 75.7° West
Basis of coordinate:based on political unit
Altitude:1403 meters
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
*Epoch:Senonian
Key time interval:Judithian
Age range of interval:83.50000 - 70.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Mesaverde
Stratigraphic resolution:bed
Lithology and environment
Primary lithology:intraclastic,yellow poorly lithified argillaceous sandstone
Includes fossils?Y
Lithology description: "friable, yellow channel sandstones with occasional stringers of clay galls and clay clasts"
Environment:"channel"
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:mesofossils
Preservation of anatomical detail:good
Disassociated major elements:many
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:bulk,sieve,field collection
Collection size:16 specimens
Reason for describing collection:general faunal/floral analysis
Museum repositories:UW
Collection dates:1981
Taxonomic list comments:NISP 16 (based on catalog numbers)
Metadata
Database number:14487
Authorizer:J. Alroy, M. Carrano Enterer:J. Alroy, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:1994-04-30 00:00:00 Last modified:2010-12-09 16:08:24
Access level:the public Released:1994-04-30 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

2237. J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
34478ETE D. G. DeMar and B. H. Breithaupt. 2008. Terrestrial and aquatic vertebrate paleocommunities of the Mesaverde Formation (Upper Cretaceous, Campanian) of the Wind River and Bighorn Basins, Wyoming, USA. In J. T. Sankey & S. Baszio (ed.), Vertebrate Microfossil Assemblages: Their Role in Paleoecology and Paleobiogeography 78-103 [M. Carrano/M. Carrano/M. Carrano]
17857ETE D. G. DeMar, Jr. and B. H. Breithaupt. 2006. The nonmammalian vertebrate microfossil assemblages of the Mesaverde Formation (Upper Cretaceous, Campanian) of the Wind River and Bighorn Basins, Wyoming. In S. G. Lucas and R. M. Sullivan (eds.), Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35:33-54 [M. Carrano/M. Carrano]