Sand Wash: Early/Lower Uintan, Colorado

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Baena arenosa Leidy 1870
    = Baenidae indet.
Joyce and Lyson 2015
Actinopteri - Cypriniformes - Catostomidae
Catostomidae indet.
Actinopteri - Siluriformes - Ictaluridae
Astephus sp. Cope 1873
Actinopteri - Siluriformes - Siluridae
"Rhineastes" smithi
Rhineastes peltatus Cope 1872
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
Actinopteri - Amiiformes - Amiidae
Amia sp. Linnaeus 1766
Reptilia
Pristichampsus sp. Gervais 1853
nomen dubium belonging to Eusuchia
Reptilia - Crocodylia
Crocodylus sp. Laurenti 1768
    = Crocodylia indet. Owen 1842
Alroy 2006
Reptilia
Allognathosuchus polyodon (Cope 1873)
originally entered as "Allognathosuchus polydon"
Saniwa sp. Leidy 1870
Reptilia - Anguidae
Anguidae indet. Gray 1825
Reptilia - Ophidia
Ophidia indet. Latreille 1804
Reptilia - Testudines - Geoemydidae
Echmatemys sp. Hay 1906
Echmatemys septaria (Cope 1873)
synonym of Echmatemys stevensoniana
Mammalia
Peratherium knighti McGrew et al. 1959
    = Herpetotherium knighti McGrew et al. 1959
Alroy 2002
Peratherium innominatum Simpson 1928
    = Copedelphys innominata Simpson 1928
Alroy 2002
recombined as Herpetotherium innominatum
possibly same as "P. marsupium" of Krishtalka and Stucky 1983b
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus despiciens Matthew 1909
(4 measurements)
    = Hyopsodus paulus Leidy 1870
Alroy 2002
Mammalia - Perissodactyla - Hyracodontidae
Hyracodontidae indet. Cope 1879
large form, either Hyrachyus eximius or "Forstercooperia grandis"; replaces "H. modestus" of West and Dawson 1975; suggested to be Uintaceras by Holbrook and Lucas 1997
Triplopus implicatus (Cope 1873)
"Hyrachyus sp. (small)" of West and Dawson 1975
Mammalia - Perissodactyla - Tapiridae
Dilophodon sp. Scott 1883
Mammalia - Perissodactyla
Isectolophus annectens Scott and Osborn 1887
Mammalia - Perissodactyla - Brontotheriidae
Wickia brevirhinus n. gen., n. sp. Mihlbachler 2008
Mihlbachler 2008
CMNH 11380
Metarhinus sp. Osborn 1908
genus is probably okay: Mader 1989
Telmatherium advocata n. sp. Cook 1926
Mihlbachler 2008
nomen dubium belonging to Metarhinus
DMNH 550
Telmatherium acola
    = Telmatherium sp. Marsh 1872
Alroy 2002
and "T. advocata": genus is okay, see Mader 1989
    = Telmatherium accola n. sp. Cook 1926
Mihlbachler 2008
nomen dubium belonging to Metarhinus
DMNH 544
Mesatirhinus junius (Leidy 1872)
Mihlbachler 2008
nomen dubium belonging to Mesatirhinus
Sphenocoelus uintensis Osborn 1895
Mihlbachler 2008
Mammalia - Perissodactyla - Equidae
Orohippus sylvaticus (Leidy 1870)
Epihippus parvus Granger 1908
    = Epihippus gracilis Marsh 1871
Alroy 2002
Mammalia - Oromerycidae
Oromeryx sp. Marsh 1894
Mammalia - Agriochoeridae
Agriochoeridae indet. Leidy 1869
said to be new
Protoreodon sp. Scott and Osborn 1887
Mammalia - Homacodontidae
Hylomeryx sp. Peterson 1919
replaces "Homacodon cf. vagans" of West and Dawson 1975
Mammalia - Helohyidae
Helohyidae indet. Marsh 1877
said to be new; replaces "Parahyus sp."; of West and Dawson 1975; described by Stucky 1998
Mammalia - Viverravidae
Viverravus minutus Wortman 1901
Mammalia
Uintacyon vorax Leidy 1872
recombined as Miacis vorax
Mammalia - Carnivora - Amphicyonidae
? Amphicyonidae indet. Haeckel 1886
Mammalia - Acreodi - Mesonychidae
Mesonyx sp. Cope 1872
Mammalia - Apternodontidae
Apternodontidae indet. Matthew 1910
Mammalia - Geolabididae
Centetodon sp. Marsh 1872
Mammalia - Pantolestidae
Pantolestes natans Matthew 1909
Mammalia - Rodentia - Ischyromyidae
Leptotomus sp. Matthew 1910
Leptotomus bridgerensis Wood 1962
    = Leptotomus parvus Wood 1959
Alroy 2002
Thisbemys sp. Wood 1959
Mammalia - Rodentia - Eomyidae
Namatomys sp. Black 1965
    = Eomyidae indet. Winge 1887
Alroy 2002
not clear from text if this is Metanoiamys
Mammalia - Rodentia - Sciuravidae
Sciuravus sp. Marsh 1871
Mammalia - Primates - Microsyopidae
Microsyops sp. Leidy 1872
Microsyops annectens (Marsh 1872)
Mammalia - Primates - Notharctidae
Notharctus robustior Leidy 1872
Mammalia - Primates - Omomyidae
Omomyidae indet. Gazin 1958
Mammalia - Leptictidae
Leptictidae indet. Gill 1872
Mammalia - Dinocerata - Uintatheriidae
Uintacolotherium blayneyi n. sp. Cook 1926
    = Eobasileus cornutus Cope 1872
Wheeler 1961
West and Dawson 1975
unclassified
Baptemys wyomingensis (Leidy 1870)
original and current combination Emys wyomingensis
see common names

Geography
Country:United States State/province:Colorado County:Moffat
Coordinates: 40.6° North, 108.1° West (view map)
Paleocoordinates:43.3° North, 97.0° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2-3
*Period:Tertiary *Local age/stage:Early/Lower Uintan
Key time interval:Early/Lower Uintan
Age range of interval:46.20000 - 39.70000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Washakie
Local section:Washa Local bed:6
Local order:bottom to top
Stratigraphy comments: said to be early Uintan
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:replaces assorted Sand Wash lists of West and Dawson 1975
West and Dawson report specimen counts, but these are not valid estimates in light of the later CM collections
apparently from a restricted stratigraphic interval that is correlable with the lower Adobe Town Mbr. in the Washakie Basin
"Hemiacodon sp." is said to be "Washakius sp." of West and Dawson, which is from Lang Springs

"Viverravus sp." is probably the specimen from Lang Springs described by West and Dawson 1975

"Tillomys cf. senex": probably the specimen from Lang Springs described by West and Dawson 1975

true identity of numerous remaining brontotheres of both West and Dawson 1975 and Stucky et al. is completely unclear; "Tanyorhinus" species could be Dolichorhinus or something else, and "Manteoceras" species could be Metatelmatherium, Dolichorhinus, or Telmatherium; Mader 1989 added Metatelmatherium ultimum to the list, but this is omitted by Stucky et al.; similarly, "Sphenocoelus sp." is listed by Prothero and Schoch 1989 but ignored by both Mader and Stucky et al.
Metadata
Database number:16623
Authorizer:J. Alroy, P. Holroyd, J. Marcot Enterer:J. Alroy, J. Marcot, P. Holroyd
Research group:vertebrate
Collections that are a subset of this one:223454
Created:1993-09-27 00:00:00 Last modified:2002-06-03 03:27:41
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3338. R. K. Stucky, D. R. Prothero, W. G. Lohr and J. R. Snyder. 1996. Magnetic stratigraphy, sedimentology, and mammalian faunas of the early Uintan Washakie Formation, Sand Wash Basin, northwestern Colorado. In D. R. Prothero, R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 40-51 [J. Alroy/J. Alroy/M. Uhen]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
18120 J. Alroy. 2006. Synonymies and reidentifications of North American fossil vertebrates. [J. Alroy/J. Alroy/J. Alroy]
62964 W. G. Joyce and T. R. Lyson. 2015. A Review of the Fossil Record of Turtles of the Clade Baenidae. Bulletin of the Peabody Museum of Natural History 56(2):147-183 [E. Vlachos/E. Vlachos/P. Mannion]
45360 M. C. Mihlbachler. 2008. Species taxonomy, phylogeny, and biogeography of the Brontotheriidae (Mammalia: Perissodactyla). Bulletin of the American Museum of Natural History 311(1):1-475 [P. Wagner/P. Wagner]
3622 W. H. Wheeler. 1961. Revision of the Uintatheres. Peabody Museum of Natural History Bulletin 14:1-93 [J. Alroy/J. Alroy/M. Uhen]