PBDB Collection

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia - Rodentia - Castoridae

	Monosaulax curtus (Matthew and Cook 1909)
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
	"Eubanks Local Fauna... Pawnee Buttes"
Mammalia - Camelidae

	Miolabis sp. Hay 1899	Tedford et al. 1987

	Protolabis sp. Cope 1876
	"Probably P. heterodontus and/or P. angustidens"

	Homocamelus also
	= Aepycamelus sp. Macdonald 1956	Tedford et al. 1987
	"Homocamelus also listed":
Mammalia - Dromomerycidae

	Bouromeryx sp. Skinner et al. 1977	Tedford et al. 1987

	Dromomeryx sp. Douglass 1909	Tedford et al. 1987
Mammalia - Perissodactyla - Equidae

	Merychippus sphenodus (Cope 1889)	Woodburne 1996
	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 paniensis (Cope 1874)

	Merychippus sejunctus (Cope 1874)

	Merychippus eohipparion Osborn 1918	Tedford et al. 1987

	Calippus sp. (Matthew and Stirton 1930)	Tedford et al. 1987

	Hypohippus osborni Gidley 1907	Tedford et al. 1987

	Parahippus coloradensis Gidley 1907
Mammalia - Perissodactyla - Rhinocerotidae

	Aphelops sp. Owen 1845
	= Aphelops megalodus Cope 1873	Prothero 2005

	Teleoceras medicornutum Osborn 1904	Prothero 2005
	"Pawnee Quarry"
Mammalia - Carnivora - Canidae

	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"

	Microtomarctus conferta (Matthew 1918)	Wang et al. 1999
	Pawnee Quarry; "north of 3 Points Pit"; "R. Day Ranch, 3 Points, west side"
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
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:	18.5 - 16.3 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]
25620	fossil 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]