SDSM V931, Mile 175: Kimmeridgian - Tithonian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Vertebrata indet. Lamarck 1801
Foster and Heckert 2011
Includes seven small vertebrae, one small caudal vertebra, five possible eggshell fragments, all probably from indeterminate reptiles, and about 25 angular to rounded fragments of larger bones, possibly belonging to dinosaurs. Finally, there are more than 100 fragmentary vertebrate specimens that could not be identified further; these include small vertebrae, teeth, phalanges, and limb bone fragments
Osteichthyes
Osteichthyes indet. Huxley 1880
Foster and Heckert 2011 1 specimen
MWC 5854 (tooth); "It is unknown for certain whether this is an actinopterygian tooth element, a dipnoan tooth, or something else"
unclassified
Actinopterygii indet. Cope 1887
Foster 2003 20 elements
    = Actinopterygii informal indet. A
Foster and Heckert 2011
Scale morphotype 1
Actinopterygii
Actinopterygii informal indet. B
Foster and Heckert 2011
Scale morphotype 2
Actinopteri - Amiiformes
Amioidei indet.
Foster and Heckert 2011
Scales; includes MWC 5276
Amphibia - Temnospondyli
Caudata indet. Scopoli 1777
Foster and Heckert 2011
Six small, unassociated vertebrae
Reptilia - Squamata
Squamata indet. Oppel 1811
Foster and Heckert 2011 1 specimen
Small procoelous vertebral centrum
Reptilia - Dinosauria
Dinosauria indet. Owen 1842
Foster and Heckert 2011
Indeterminate eggshell
Reptilia - Theropoda
Theropoda indet. Marsh 1881
3 individuals
Eight isolated teeth and tooth fragments, including UW 18237
Reptilia
Ornithopoda indet. Marsh 1881
3 individuals
    = ? Othnielia sp. Galton 1977
Foster 2003
    = Othnielosaurus sp. Galton 2007
Foster and Heckert 2011
synonym of Nanosaurus
UW 20403 (tooth)
Reptilia - Hypsilophodontidae
Hypsilophodontidae indet. Dollo 1882
Foster and Heckert 2011
Teeth, including MWC 5851
Reptilia
Crocodyliformes indet. Hay 1930
Foster and Heckert 2011
Teeth
Reptilia - Goniopholididae
Crocodylia indet. (Owen 1842)
13 individuals
    = Goniopholididae indet. Cope 1875
Foster and Heckert 2011
67 specimens of teeth and osteoderms
Reptilia - Cteniogenyidae
Cteniogenys antiquus Gilmore 1928
5 individuals
    = Cteniogenys sp. Gilmore 1928
Foster and Heckert 2011
Seven vertebrae and one jaw fragment (UW 20331)
Reptilia
Testudines indet. Batsch 1788
10 individuals
    = Testudinata indet. Oppel 1811
Foster and Heckert 2011
Shell specimens and all limb elements
Reptilia - Pleurosternidae
Glyptops sp. Marsh 1890
Foster and Heckert 2011
Shell fragments
Dinochelys sp. Gaffney 1979
Foster and Heckert 2011
Shell fragments
Mammalia
Mammalia indet. Linnaeus 1758
Foster 2003 4 individuals
Teeth, including UW 20218, UW 20577, MWC 5816, MWC 5855 and JRF 2000-2
Mammalia - Multituberculata
Multituberculata indet. Cope 1884
Foster and Heckert 2011 1 specimen
UW 18027 (tooth); "probably Ctenacodon or Psalodon"
Docodonta - Docodontidae
Docodon sp. Marsh 1881
Foster and Heckert 2011 1 specimen
UW 20578 (partial molar)
Docodon victor (Marsh 1880)
Foster et al. 2006 1 specimen
UW 20578, partial right lower molar
Dipnomorpha
Dipnoi indet. Müller 1884
3 elements
    = Potamoceratodus sp. Pardo et al. 2010
Foster and Heckert 2011
Tooth plate fragments
see common names

Geography
Country:United States State/province:Wyoming County:Crook
Coordinates: 44.5° North, 104.7° West (view map)
Paleocoordinates:39.8° North, 50.3° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Key time interval:Kimmeridgian - Tithonian
Age range of interval:154.80000 - 145.00000 m.y. ago
Stratigraphy
Formation:Morrison
Stratigraphic resolution:bed
Stratigraphy comments: close to top of formation
Lithology and environment
Primary lithology: not reported
Includes fossils?Y
Environment:wet floodplain
Geology comments: poorly drained floodplain
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Disassociated major elements:some
Disassociated minor elements:some
Fragmentation:occasional
Collection methods and comments
Collection methods:bulk,surface (float),sieve,field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:SDSM
Metadata
Database number:56165
Authorizer:M. Carrano, P. Mannion Enterer:M. Carrano, J. Tennant, P. Mannion
Modifier:M. Carrano Research group:vertebrate
Created:2005-11-14 13:30:40 Last modified:2023-08-23 14:50:17
Access level:the public Released:2005-11-14 13:30:40
Creative Commons license:CC BY
Reference information

Primary reference:
15142.ETE J. R. Foster and K. C. Trujillo. 2000. New occurrences of Cteniogenys (Reptilia, Choristodera) in the Late Jurassic of Wyoming and South Dakota. Brigham Young University Geology Studies 45:11-18 [M. Carrano/M. Carrano]

Secondary references:

15179ETE J. R. Foster. 2003. Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A. New Mexico Museum of Natural History and Science Bulletin 23:1-95 [M. Carrano/M. Carrano]
44147 J. R. Foster and A. B. Heckert. 2011. Ichthyoliths and other microvertebrate remains from the Morrison Formation (Upper Jurassic) of northeastern Wyoming: A screen-washed sample indicates a significant aquatic component to the fauna. Palaeogeography, Palaeoclimatology, Palaeoecology 305:264-279 [P. Mannion/P. Mannion]
46097 J. R. Foster, K. C. Trujillo, S. K. Madsen and J. E. Martin. 2006. The Late Jurassic mammal Docodon, from the Morrison Formation of The Black Hills, Wyoming: implications for abundance and biogeography of the genus. In J. R. Foster & S. G. Lucas (ed.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:165-169 [P. Mannion/J. Tennant/M. Carrano]