PBDB Collection

Cedar Creek (Middle): Orellan, Colorado

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia - Lagomorpha - Leporidae

	Megalagus turgidus (Cope 1873)

	Palaeolagus intermedius Matthew 1899
	confirmed by Dawson 1958

	Palaeolagus burkei Schlaikjer 1935
Mammalia - Rodentia

	Diplolophus insolens Troxell 1923	Korth 1989
Mammalia - Rodentia - Cricetidae

	Eumys elegans Leidy 1856

	Eumys exiguus Wood 1937
	= Scottimus ambiguus Korth 1981	Korth 1981
Mammalia - Rodentia - Sciuridae

	Cedromus wardi Wilson 1949
Mammalia - Rodentia - Aplodontidae

	Prosciurus relictus (Cope 1873)
	recombined as Altasciurus relictus

	Pelycomys placidus Galbreath 1953
	said by Korth 1989b to occur "at all levels of the Orellan Cedar Creek beds" but listed only here by Galbreath
Mammalia - Rodentia - Eomyidae

	Paradjidaumo trilophus (Cope 1873)
	recombined as Adjidaumo trilophus
Mammalia - Rodentia - Ischyromyidae

	Ischyromys typus Leidy 1856
Mammalia - Rodentia - Florentiamyidae

	Heliscomys tenuiceps Galbreath 1948
	recombined as Ecclesimus tenuiceps
	additional specimen described by Galbreath 1961
Mammalia - Creodonta - Hyaenodontidae

	Hyaenodon horridus Leidy 1853
Mammalia - Carnivora - Canidae

	Pseudocynodictis lippincottianus (Cope 1873)
	= "Hesperocyon" coloradensis Wang 1994	Wang 1994
	may include "Pseudocynodictis sp. (Small form)," referred by Wang and Tedford 1996 to "Cormocyon pavidus" and by Wang et al. 1999 to "H. sp."

	Pseudocynodictis gregarius (Cope 1873)
	recombined as Hesperocyon gregarius
Mammalia - Carnivora - Ursidae

	Drassonax harpagops n. sp. Galbreath 1953
	see also Baskin and Tedford 1996
Mammalia - Carnivora - Amphicyonidae

	Daphoenus cf. vetus Leidy 1853
	probably includes "Cedar Creek" and "Casement Ranch" specimens of Hunt 1998b
Mammalia - Carnivora - Nimravidae

	Dinictis sp. (Leidy 1854)
Mammalia - Carnivora - Palaeogalidae

	Palaeogale lagophaga (Cope 1873)
	= Palaeogale sectoria Gervais 1848	Alroy 2002
	presumably this includes "Bunaelurus" specimen of Matthew 1902b from "Upper Oreodon beds of East Pawnee Butte"
Mammalia - Perissodactyla - Equidae

	Mesohippus eulophus Osborn 1904
	= Miohippus obliquidens Osborn 1904	Alroy 2002
Mammalia - Perissodactyla - Rhinocerotidae

	Subhyracodon occidentalis (Leidy 1850)
Mammalia - Perissodactyla - Hyracodontidae

	Hyracodon sp. Leidy 1856
	= Hyracodon nebraskensis Leidy 1850	Alroy 2002
	in table, but see text; possibly includes type of "H. selenidens" of Troxell 1921d from "Middle Oligocene, Colorado"
Mammalia - Anthracotheriidae

	Heptacodon sp. Marsh 1894
Mammalia - Entelodontidae

	Archaeotherium mortoni Leidy 1850
Mammalia - Merycoidodontidae

	Merycoidodon sp. Leidy 1848
	= Merycoidodontidae indet. Cook 1912	Alroy 2002
	could be Miniochoerus
Mammalia - Leptomerycidae

	Leptomeryx sp. Leidy 1853
	= Leptomerycidae indet. Zittel 1893	Alroy 2002

	Leptomeryx esulcatus Cope 1889

	Leptomeryx evansi Leidy 1853
Mammalia - Hypertragulidae

	Hypertragulus calcaratus (Cope 1873)
Mammalia - Hypisodontidae

	Hypisodus minimus (Cope 1873)
Mammalia - Leptochoeridae

	Leptochoerus spectabilis Leidy 1856
	= Leptochoerus sp. Leidy 1856	Alroy 2002
	could be type of L. emilyae, see Edwards 1976a

	Stibarus lemurinus (Cope 1874)
	= Stibarus obtusilobus Cope 1873	Alroy 2002
Mammalia - Camelidae

	Poebrotherium wilsoni Leidy 1847
Mammalia - Geolabididae

	Metacodon mellingeri Patterson and McGrew 1937
	= Centetodon marginalis Cope 1873	Alroy 2002
Mammalia - Proscalopidae

	Arctoryctes galbreathi n. sp. Reed 1956
	recombined as Oligoscalops galbreathi
	"? Arctoryctes sp."; includes "O. whitmanensis" reported by Reed 1961

	Proscalops sp. Matthew 1901
Mammalia - Soricidae

	Heterosorex compressus (Galbreath 1953)
	recombined as Noritrimylus compressus
	"Domnina compressa"

	Domnina gradata Cope 1873
Mammalia - Macroscelidea - Amphilemuridae

	Ankylodon progressus Galbreath 1953
	= Ankylodon annectens Patterson and McGrew 1937	Alroy 2002
Mammalia - Chiroptera - Vespertilionidae

	Oligomyotis casementi	Galbreath 1962
	from "middle Orellan" of Cedar Creek", must = middle of mbr.; a bat
Mammalia - Leptictidae

	Ictops sp. Leidy 1868
	= Leptictidae indet. Gill 1872	Alroy 2002
Mammalia

	Peratherium huntii (Cope 1873)
	= Herpetotheriinae indet. Trouessart 1879	Korth 1994
	spelled with current rank as Herpetotheriidae
	(probably Nanodelphys hunti and/or Copedelphys stevensoni) DUPLICATE REF 2121 or 2122 or 2123

	Peratherium fugax (Cope 1873)
	corrected as Herpetotherium fugax
see common names

Geography

Country:	United States	State/province:	Colorado	County:	Logan
Coordinates:	40.8° North, 103.1° West (view map)
Paleocoordinates:	42.0° North, 95.2° West
Basis of coordinate:	based on political unit

Time

Period:	Paleogene	Epoch:	Oligocene
Stage:	Rupelian	10 m.y. bin:	Cenozoic 4
*Period:	Tertiary
Key time interval:	Orellan
Age range of interval:	33.90000 - 31.80000 m.y. ago
* legacy (obsolete) database fields

Stratigraphy

Geological group:	White River	Formation:	Brule	Member:	Cedar Creek
Local section:	Logan	Local bed:	3
Local order:	bottom to top

Lithology and environment

Primary lithology:	not reported
Environment:	terrestrial indet.

Taphonomy

Modes of preservation:	body
Size of fossils:	macrofossils

Collection methods and comments

Reason for describing collection:

general faunal/floral analysis

Metadata

Database number:	17082
Authorizer:	J. Alroy	Enterer:	J. Alroy
Modifier:	M. Carrano	Research group:	vertebrate
Created:	1993-02-18 00:00:00	Last modified:	2022-12-02 14:30:10
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]
1574		E. C. Galbreath. 1962. Transactions of the Kansas Academy of Sciences 65(4) [J. Alroy/J. Alroy]
2103		W. W. Korth. 1981. New Oligocene rodents from western North America. Annals of Carnegie Museum 50(10):289-318 [J. Alroy/J. Alroy/M. Uhen]
2113		W. W. Korth. 1989. Stratigraphic occurrence of rodents and lagomorphs in the Orella Member, Brule Formation (Oligocene), northwestern Nebraska. Contributions to Geology, University of Wyoming 27(1):15-20 [J. Alroy/J. Alroy/J. Marcot]
2121		W. W. Korth. 1994. Middle Tertiary marsupials (Mammalia) from North America. Journal of Paleontology 68(2):376-397 [J. Alroy/J. Alroy/J. Alroy]
2484		J. E. Mawby. 1960. A new American occurrence of Heterosorex Gaillard. Journal of Paleontology 34(5):950-956 [J. Alroy/J. Alroy/J. Alroy]
2845		C. A. Reed. 1956. A new species of the fossorial mammal Arctoryctes from the Oligocene of Colorado. Fieldiana Geology 10(24) [J. Alroy/J. Alroy/J. Ju]
6226		X. Wang. 1994. Phylogenetic systematics of the Hesperocyoninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 221:1-207 [J. Alroy/J. Alroy/J. Alroy]