Monroe Creek (SDSM V-6229) (Oligocene of the United States)

Also known as LACM 1871

Where: Shannon County, South Dakota (43.3° N, 102.5° W: paleocoordinates 44.1° N, 96.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Monroe Creek Formation, Monroecreekian (26.3 - 24.8 Ma)

Environment/lithology: terrestrial

Reposited in the SDSM

Primary reference: L. J. Macdonald. 1972. Monroe Creek (early Miocene) microfossils from the Wounded Knee area, South Dakota. South Dakota Geological Survey Report of Investigations 105:1-43 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 17564: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• "at least" NISP counts are probably not severe underestimates, and NISP estimate of 730 seems reasonable
Show authors, comments, and common names
unclassified
  -
"Cricetid" indet.
Mammalia
 Placentalia -
Carnivora indet.
Carnivora indet. Bowdich 1821 carnivoran
 Carnivora - Mustelidae
Promartes olcotti5
Promartes olcotti5 Riggs 1942 mustelid carnivore
 Carnivora - Canidae
Enhydrocyon pahinsintewakpa8
Enhydrocyon pahinsintewakpa8 Macdonald 1963 canid
 Perissodactyla - Equidae
Miohippus equinanus5
Miohippus equinanus5 Osborn 1918 anchitheriine horse
 Artiodactyla - Merycoidodontidae
Oreodontoides curtus5
Oreodontoides curtus5 Loomis 1924 oreodont
 Artiodactyla - Hypertragulidae
Nanotragulus sp.
Nanotragulus sp. Lull 1922 ruminant
 Theriamorpha - Geolabididae
Centetodon ? magnus4
Centetodon ? magnus4 Clark 1936 placental
: "Geolabis"
 Theriamorpha - Talpidae
Scalopoides sp.
Scalopoides sp. Wilson 1960 mole
 Theriamorpha - Proscalopidae
Proscalops secundus
Proscalops secundus Matthew 1909 placental
NISP at least 20
 Theriamorpha - Soricidae
Pseudotrimylus sp.1
Pseudotrimylus sp.1 Gureev 1971 shrew
 Theriamorpha - Erinaceidae
"Palaeoerinaceus horncloudi n. sp." = Amphechinus horncloudi5, Parvericius sp.3
"Palaeoerinaceus horncloudi n. sp." = Amphechinus horncloudi5 Macdonald 1970 hedgehog
includes "Brachyerix macrotis" according to Rich 1981
Parvericius sp.3 Koerner 1940 hedgehog
 Lagomorpha - Ochotonidae
Gripholagomys sp.2
Gripholagomys sp.2 Green 1972 pika
 Lagomorpha - Leporidae
Palaeolagus cf. philoi
Palaeolagus cf. philoi Dawson 1958 rabbit
 Rodentia - Mylagaulidae
"Promylagaulus ovatus n. sp." = Trilaccogaulus ovatus
"Promylagaulus ovatus n. sp." = Trilaccogaulus ovatus Rensberger 1979 rodent
"P. riggsi," NISP at least 75
 Rodentia - Florentiamyidae
"Sanctimus tiptoni" = Florentiamys tiptoni
"Sanctimus tiptoni" = Florentiamys tiptoni Macdonald 1970 rodent
 Rodentia - Zapodidae
"Plesiosminthus grangeri" = Schaubeumys grangeri
"Plesiosminthus grangeri" = Schaubeumys grangeri Wood 1935 jumping mouse
"Plesiosminthus sp."; DUPLICATE REF 1712 or 1713 or 1714
 Rodentia - Cricetidae
Leidymys sp.6, Paciculus cf. montanus
Leidymys sp.6 Wood 1936 mouse
Paciculus cf. montanus Black 1961 mouse
NISP at least 26
 Rodentia - Allomyidae
"Allomys harkseni" = Alwoodia harkseni
"Allomys harkseni" = Alwoodia harkseni Macdonald 1963 rodent
NISP at least 63
 Rodentia - Entoptychidae
Gregorymys formosus
Gregorymys formosus Matthew 1907 rodent
NISP "approximately" 339
 Rodentia - Sciuridae
Protospermophilus sp.7, Nototamias quadratus3
Protospermophilus sp.7 Gazin 1930 squirrel
large
Nototamias quadratus3 Korth 1992 squirrel
 Rodentia - Castoridae
Castoridae indet.1, "Palaeocastor cf. simplicidens" = Fossorcastor fossor
Castoridae indet.1 Gray 1821 beaver
"Palaeocastor cf. simplicidens" = Fossorcastor fossor Peterson 1905 beaver
 Rodentia - Eutypomyidae
Eutypomys cf. montanensis
Eutypomys cf. montanensis Wood and Konizeski 1965 rodent
 Rodentia -
Geomyoidea indet.1
Geomyoidea indet.1 Bonaparte 1845 rodent
 Rodentia - Eomyidae
Pseudotheridomys sp.3
Pseudotheridomys sp.3 Schlosser 1926 rodent
 Theriamorpha - Herpetotheriidae
"Peratherium youngi" = Herpetotherium youngi
"Peratherium youngi" = Herpetotherium youngi McGrew 1937 marsupial
corrects "P. spindleri" of Macdonald 1970
1Alroy 2002; 2Green 1972; 3Korth 1992; 4Lillegraven et al. 1981; 5Macdonald 1970; 6Martin and Green 1984; 7Storer 2002; 8Wang 1994