Eubanks: Hemingfordian, Colorado

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Castoridae
Monosaulax curtus (Matthew and Cook 1909)
Mammalia - Perissodactyla - Rhinocerotidae
Aphelops sp. Owen 1845
    = Aphelops megalodus Cope 1873
Prothero 2005
Teleoceras medicornutum Osborn 1904
Prothero 2005
"Pawnee Quarry"
Mammalia - Perissodactyla - Equidae
Hypohippus osborni Gidley 1907
Tedford et al. 1987
Parahippus coloradensis Gidley 1907
Merychippus sphenodus (Cope 1889)
Woodburne 1996
recombined as Cormohipparion sphenodus
sensu stricto, from Pawnee Quarry; type of Cope 1889 probably came from this level and may be from this quarry; further material is from 3 Points Quarry, just above the Eubanks horizon
Merychippus sejunctus (Cope 1874)
Merychippus eohipparion Osborn 1918
Tedford et al. 1987
Merychippus paniensis (Cope 1874)
synonym of Merychippus insignis
Calippus sp. (Matthew and Stirton 1930)
Tedford et al. 1987
original and current combination Protohippus (Calippus)
Mammalia - Camelidae
Protolabis sp. Cope 1876
"Probably P. heterodontus and/or P. angustidens"
Homocamelus also
    = Aepycamelus sp. Macdonald 1956
Tedford et al. 1987
"Homocamelus also listed":
Miolabis sp. Hay 1899
Tedford et al. 1987
Mammalia - Palaeomerycidae
Bouromeryx sp. Skinner et al. 1977
Tedford et al. 1987
Dromomeryx sp. Douglass 1909
Tedford et al. 1987
Mammalia - Merycoidodontidae
Ticholeptus sp. Cope 1878
Tedford et al. 1987
presumably includes "Ustatochoerus sp."
    = Ticholeptus zygomaticus Cope 1878
MacFadden 2006
Brachycrus laticeps (Douglass 1900)
    = Brachycrus sp. Matthew 1901
Kelly and Lander 1988
invalid subgroup of Merycochoerus
"Eubanks Local Fauna... Pawnee Buttes"
Mammalia - Carnivora - Amphicyonidae
Cynelos sp. Jourdan 1862
Hunt 1998
"Early Barstovian... Pawnee Buttes area, Weld Co."; presumably includes "Amphicyon ingens" of Tedford et al. 1987 from Eubanks because Amphicyon is omitted by Hunt
Mammalia - Carnivora - Canidae
Microtomarctus conferta (Matthew 1918)
Wang et al. 1999
Pawnee Quarry; "north of 3 Points Pit"; "R. Day Ranch, 3 Points, west side"
Tomarctus brevirostris Cope 1873
Wang et al. 1999
"Middle Horizon near Hereford"; Question Mark Pit; "Three Point, East Side Pit"; Pawnee Quarry; Big Spring Quarry
Aelurodon asthenostylus Wang et al. 1999
Wang et al. 1999
Pawnee Buttes; "Two mi west of Quarry"; "Davis Ranch, first canyon east of the Kiota Road"; "Hereford, middle horizon"
see common names

Geography
Country:United States State/province:Colorado County:Weld
Coordinates: 40.8° North, 104.2° West (view map)
Paleocoordinates:41.5° North, 100.4° West
Basis of coordinate:based on political unit
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
*Period:Tertiary
Key time interval:Hemingfordian
Age range of interval:20.43000 - 15.97000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Pawnee Creek
Local section:PwnCr Local bed:3
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:type locality of Pawnee Creek Fm.
apparently most or all of Galbreath's "certain" records are from a single locality in Weld Co. (see fig. 8); records of Tedford et al. 1987 are for "the type locality and correlated sites"; Woodburne 1996a indicates that Galbreath's quarry is the same as the F:AM Pawnee Quarry, which presumably yielded Tedford's material
overlain by Horse and Mastodon Quarry, and Pawnee Buttes fauna of Tedford et al. 1987 is from even higher channel fills; see also Fig. 7 of Woodburne 1996a
ash immediately below Pawnee Quarry dated at 14.8 Ma (Ar-Ar?): Woodburne 1996a
unit includes the Pawnee Buttes Ash
"probable" occurrences: "Amblycastor? sp." Tomarctus brevirostris - see Courthouse Buttes "Amphicyon" sinapius - presumably type of Matthew 1902c Proboscidea indet. Aphelops megalodus (sic) "Ustatochoerus? schrammi" - see Schultz and Falkenbach 1941: F:AM specimens from "N. of Pawnee Buttes" and "Pawnee Buttes area" Cranioceras pawniensis: type of Frick 1937 from "west of buttes, middle horizon"; also postcrania from "Quarry Hill"
record of cf. Hystricops sp. discussed by Voorhies 1990 is Galbreath's "? Amblycastor sp." of uncertain provenance
Metadata
Also known as:Eubanks Ranch House; Pawnee Quarry
Database number:17908
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2002-06-03 03:27:42
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

1570. E. C. Galbreath. 1953. A contribution to the Tertiary geology and paleontology of northeastern Colorado. University of Kansas Paleontological Contributions Vertebrata 4:1-120 [J. Alroy/J. Alroy/J. Marcot]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1977 R. M. Hunt, Jr. 1998. Amphicyonidae. 196-227 [J. Alroy/J. Alroy/J. Alroy]
2070 T. S. Kelly and E. B. Lander. 1988. Biostratigraphy and Correlation of Hemingfordian and Barstovian Land Mammal Assemblages, Caliente Formation, Cuyama Valley Area, California. In W. J. M. Bazeley (ed.), Tertiary Tectonics and Sedimentation in the Cuyama Basin, San Luis Obispo, Santa Barbara, and Ventura Counties, California 1-19 [J. Alroy/J. Alroy/J. Marcot]
25620fossil record B. J. MacFadden. 2006. North American Miocene Land Mammals from Panama. Journal of Vertebrate Paleontology 26(3):720-734 [B. Beatty/B. Beatty/J. Ceballos]
51726 D. R. Prothero. 2005. The Evolution of North American Rhinoceroses. 1-218 [J. Marcot/J. Marcot]
6198 R. H. Tedford, T. Galusha, M. F. Skinner, B. E. Taylor, R. W. Fields, J. R. Macdonald, J. M. Rensberger, S. D. Webb, and D. P. Whistler. 1987. Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America. In M. O. Woodburne (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy 153-210 [J. Alroy/J. Alroy/P. Wagner]
3558 X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]
3755 M. O. Woodburne. 1996. Reappraisal of the Cormohipparion from the Valentine Formation, Nebraska. American Museum Novitates 3163:1-56 [J. Alroy/J. Alroy/J. Marcot]