Cedar Creek (Lower) (Oligocene of the United States)

Also known as Clyde Ward Ranch

Where: Logan County, Colorado (40.8° N, 103.1° W: paleocoordinates 42.0° N, 95.2° W)

• coordinate based on political unit

When: Cedar Creek Member (Brule Formation), Orellan (33.9 - 33.3 Ma)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 17081: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Chris Bell, Terri Cleary and Clint Boyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• includes Mellinger locality (UCM 78099)
Cedar Creek sequence is in the vicinity of Pawnee Buttes
Korth and Hageman 1988 believe that the entire Cedar Creek beds are of the same age as Orella D; however, Prothero 1996c shows that it spans at least one magnetic reversal and probably two
level indeterminate: Coloradoeumys galbreathi Martin 1980a: type "Hesperocyon" coloradensis Wang and Tedford 1996: type, UK Colorado 46, Cedar Creek Mbr., Logan Co. Parictis sp. Hunt 1998a: "Cedar Creek beds, Chimney Canyon, Logan County"
Aves
 Galliformes - Odontophoridae
"Odontophorinae indet." = Odontophoridae10
"Odontophorinae indet." = Odontophoridae10 Gould 1844 New World quail
"Cedar Creek facies... SW. 1/4 sec. 12, T. 11 N., R. 54 W.": placed in this fauna by Galbreath, who lists the specimen as "Phasianid sp."
Reptilia
 Squamata - Rhineuridae
"Rhineura wilsoni n. sp." = Rhineura hatcherii9, "Rhineura amblyceps n. sp." = Rhineura hatcherii9
"Rhineura wilsoni n. sp." = Rhineura hatcherii9 Baur 1893 worm lizard
KUVP No. 7651 (holotype), nearly complete skull lacking squamosal, quadrate, columella, extracolumella, and entire lower jaws
"Rhineura amblyceps n. sp." = Rhineura hatcherii9 Baur 1893 worm lizard
KUVP No. 7649 (holotype), basal portion of skull. Same locality as H. galbreathi holotype, so placed here. Referred specimens: KUVP 7650, skull; KUVP 9041, fragmentary skull
 Squamata - Hyporhinidae
Hyporhina galbreathi n. sp.9 Taylor 1951 worm lizard
Holotype: "University of Kansas Museum of Natural History, Paleo. No. 8221, consisting of a skull, complete save for the absence of the quadrate and a part of the squamosal." Taylor 1951 gave the locality name "Clyde Ward Ranch, Logan County, Colorado;" Galbreath 1953 gave locality as SW1/4 sec. 12, T. 11N., R 54 W
Mammalia
 Leptictida - Leptictidae
Leptictidae indet.1 Gill 1872 eutherian
 Rodentia - Cricetidae
Scottimus ambiguus4 Korth 1981 mouse
Wilsoneumys planidens5 Wilson 1949 mouse
Eumys elegans Leidy 1856 mouse
includes "E. obliquidens"
 Rodentia - Aplodontidae
"Prosciurus relictus" = Altasciurus relictus
"Prosciurus relictus" = Altasciurus relictus Cope 1873 mountain beaver
 Rodentia - Sciuridae
Cedromus wardi Wilson 1949 squirrel
 Rodentia - Eomyidae
Paradjidaumo trilophus Cope 1873 rodent
Adjidaumo minutus Cope 1873 rodent
 Rodentia - Florentiamyidae
Ecclesimus tenuiceps5 Galbreath 1948 rodent
 Rodentia - Heliscomyidae
Apletotomeus incohatus6 Reeder 1960 rodent
Heliscomys vetus Cope 1873 rodent
additional specimen described by Galbreath 1962a
 Rodentia - Castoridae
Agnotocastor coloradensis n. sp. Wilson 1949 beaver
see Xu 1996
 Rodentia - Ischyromyidae
? Ischyromys sp.1 Leidy 1856 rodent
Ischyromys typus Leidy 1856 rodent
 Lagomorpha - Leporidae
Palaeolagus intermedius Matthew 1899 rabbit
confirmed by Dawson 1958
Palaeolagus haydeni Leidy 1856 rabbit
Megalagus turgidus Cope 1873 rabbit
 Lipotyphla - Geolabididae
Centetodon magnus1 Clark 1936 placental
Centetodon marginalis1 Cope 1873 placental
 Perissodactyla - Hyracodontidae
Hyracodon sp. Leidy 1856 odd-toed ungulate
 Perissodactyla - Rhinocerotidae
Subhyracodon occidentalis Leidy 1850 rhinoceros
 Perissodactyla - Equidae
Miohippus obliquidens1 Osborn 1904 anchitheriine horse
 Tribosphenida - Soricidae
Pseudotrimylus compressus7 Galbreath 1953 shrew
 Tribosphenida - Heterosoricidae
Domnina gradata Cope 1873 placental
 Tribosphenida - Proscalopidae
Oligoscalops sp.2 Reed 1961 placental
from Mellinger locality
 Tribosphenida - Apternodontidae
Oligoryctes sp.8 Hough 1956 placental
Mellinger locality
 Carnivora - Canidae
Hesperocyon gregarius1 Cope 1873 canid
 Macroscelidea - Amphilemuridae
Ankylodon annectens Patterson and McGrew 1937 elephant shrew
includes "A. progressus"
 Ungulata - Merycoidodontidae
Merycoidodontidae indet.1 Cook 1912 oreodont
 Ungulata - Tayassuidae
Tayassuidae indet.1 Palmer 1897 peccary
 Ungulata - Leptochoeridae
Stibarus obtusilobus1 Cope 1873 even-toed ungulate
Leptochoerus sp.1 Leidy 1856 even-toed ungulate
 Ungulata - Entelodontidae
Archaeotherium mortoni Leidy 1850 even-toed ungulate
 Ungulata - Camelidae
Paratylopus labiatus1 Cope 1881 camel
Poebrotherium wilsoni Leidy 1847 camel
 Ungulata - Hypertragulidae
Hypertragulus calcaratus Cope 1873 ruminant
 Ungulata - Hypisodontidae
Hypisodus minimus Cope 1873 ruminant
 Ungulata - Leptomerycidae
Leptomeryx evansi, "Hendryomeryx esulcatus" = Leptomeryx esulcatus1
Leptomeryx evansi Leidy 1853 ruminant
"Hendryomeryx esulcatus" = Leptomeryx esulcatus1 Cope 1889 ruminant
 Insectivora - Apatemyidae
Sinclairella dakotensis3 Jepsen 1934 insectivoran
Mellinger locality; mentioned by West 1973c DUPLICATE REF 1239 or 1240
 Hyaenodonta - Hyaenodontidae
Hyaenodon crucians Leidy 1853 eutherian
Hyaenodon mustelinus Scott 1894 eutherian
 Theriiformes - Peradectidae
Nanodelphys hunti1 Cope 1873 metatherian
 Theriiformes - Herpetotheriidae
"Herpetotherium fugax" = Peratherium fugax1
"Herpetotherium fugax" = Peratherium fugax1 Cope 1873 marsupial