Monroe Creek (SDSM V-6229): Monroecreekian, South Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
Peratherium youngi McGrew 1937
20 specimens
recombined as Herpetotherium youngi
corrects "P. spindleri" of Macdonald 1970
Mammalia - Rodentia - Allomyidae
Allomys harkseni Macdonald 1963
recombined as Alwoodia harkseni
NISP at least 63
Mammalia - Rodentia - Castoridae
Capatanka sp. Macdonald 1963
    = Castoridae indet. Gray 1821
Alroy 2002
Palaeocastor cf. simplicidens (Matthew 1907)
45 specimens
synonym of Fossorcastor fossor
Mammalia - Rodentia - Eutypomyidae
Eutypomys cf. montanensis Wood and Konizeski 1965
1 specimen
Mammalia - Rodentia
Proheteromys sp. Wood 1932
16 specimens
    = Geomyoidea indet. Bonaparte 1845
Alroy 2002
Mammalia - Rodentia - Eomyidae
Pseudotheridomys cf. hesperus Wilson 1960
2 specimens
    = Pseudotheridomys sp. Schlosser 1926
Korth 1992
Mammalia - Rodentia - Florentiamyidae
Sanctimus tiptoni Macdonald 1970
23 specimens
recombined as Florentiamys tiptoni
Mammalia - Rodentia - Sciuridae
Miospermophilus sp. Black 1963
9 specimens
    = Nototamias quadratus Korth 1992
Korth 1992
replaces ID of Martin 1976; "small species" of Macdonald
Sciuridae indet. Gray 1821
large
    = Protospermophilus sp. Gazin 1930
Storer 2002
Mammalia - Rodentia - Entoptychidae
Gregorymys formosus (Matthew 1907)
NISP "approximately" 339
Mammalia - Rodentia - Zapodidae
Plesiosminthus grangeri (Wood 1935)
4 specimens
original and current combination Schaubeumys grangeri
"Plesiosminthus sp."; DUPLICATE REF 1712 or 1713 or 1714
Mammalia - Rodentia - Cricetidae
Paciculus cf. montanus Black 1961
NISP at least 26
informal Cricetid indet.
4 specimens
    = Leidymys sp. Wood 1936
Martin and Green 1984
Mammalia - Rodentia - Mylagaulidae
Promylagaulus ovatus n. sp. Rensberger 1979
recombined as Trilaccogaulus ovatus
"P. riggsi," NISP at least 75
Mammalia - Lagomorpha - Leporidae
Palaeolagus cf. philoi Dawson 1958
32 specimens
Mammalia - Lagomorpha - Ochotonidae
Desmatolagus sp. Matthew and Granger 1923
11 specimens
    = Gripholagomys sp. Green 1972
Green 1972
Mammalia - Carnivora
Carnivora indet. Bowdich 1821
Mammalia - Carnivora - Canidae
Enhydrocyon crassidens Matthew 1907
2 specimens
    = Enhydrocyon pahinsintewakpa Macdonald 1963
Wang 1994
replaces ID of Macdonald 1970
Mammalia - Carnivora - Mustelidae
Promartes olcotti Riggs 1942
Macdonald 1970 1 specimen
Mammalia - Merycoidodontidae
Oreodontoides curtus (Loomis 1924)
Macdonald 1970 20 specimens
Mammalia - Hypertragulidae
Nanotragulus sp. Lull 1922
3 specimens
Mammalia - Perissodactyla - Equidae
Miohippus equinanus Osborn 1918
Macdonald 1970 4 specimens
Mammalia - Soricidae
Trimylus sp. Roger 1885
1 specimen
    = Pseudotrimylus sp. Gureev 1971
Alroy 2002
Mammalia - Geolabididae
Centetodon ? magnus (Clark 1936)
Lillegraven et al. 1981 2 specimens
: "Geolabis"
Mammalia - Talpidae
Scalopoides sp. Wilson 1960
3 specimens
Mammalia - Proscalopidae
Proscalops secundus Matthew 1909
NISP at least 20
Mammalia - Erinaceidae
Palaeoerinaceus horncloudi n. sp. Macdonald 1970
Macdonald 1970 5 specimens
recombined as Amphechinus horncloudi
includes "Brachyerix macrotis" according to Rich 1981
Parvericius cf. montanus Koerner 1940
    = Parvericius sp. Koerner 1940
Korth 1992
NISP about 17
see common names

Geography
Country:United States State/province:South Dakota County:Shannon
Coordinates: 43.3° North, 102.5° West (view map)
Paleocoordinates:44.1° North, 96.6° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Oligocene
Stage:Chattian 10 m.y. bin:Cenozoic 4
*Period:Tertiary
Key time interval:Monroecreekian
Age range of interval:24.70000 - 23.10000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Monroe Creek
Local section:BgBad Local bed:14
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection size:730 specimens
Museum repositories:SDSM
Taxonomic list comments:"at least" NISP counts are probably not severe underestimates, and NISP estimate of 730 seems reasonable
Metadata
Also known as:LACM 1871
Database number:17564
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:1995-03-26 00:00:00 Last modified:2011-04-21 20:03:51
Access level:the public Released:1995-03-26 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
2362. 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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1711 M. Green. 1972. Lagomorpha from the Rosebud Formation, South Dakota. Journal of Paleontology 46(3):377-385 [J. Alroy/J. Alroy/M. Uhen]
1712 M. Green. 1977. Dipoides (Rodentia: Castoridae) from Yankton County, South Dakota. Journal of Paleontology 51(1) [J. Alroy/J. Alroy/J. Ju]
2115 W. W. Korth. 1992. Fossil small mammals from the Harrison Formation (late Arikareean: earliest Miocene), Cherry County, Nebraska. Annals of Carnegie Museum 61(2):69-132 [J. Alroy/J. Alroy/M. Uhen]
2241 J. A. Lillegraven, M. C. McKenna, and L. Kristalka. 1981. Evolutionary relationships of middle Eocene and younger species of Centetodon (Mammalia, Insectivora, Geolabididae) with a description of the dentition of Ankylodon (Adapisoricidae). University of Wyoming Publication 45:1-115 [J. Alroy/J. Alroy/M. Uhen]
2356 J. R. Macdonald. 1970. Review of the Miocene Wounded Knee faunas of southwestern South Dakota. Bulletin of the Los Angeles County Museum of Natural History, Science 8:165-82 [J. Alroy/J. Alroy/C. Bell]
2416 J. E. Martin and M. Green. 1984. Insectivora, Sciuridae, and Cricetidae from the Early Miocene Rosebud Formation in South Dakota. In R. M. Mengle (ed.), Carnegie Museum of Natural History Special Publication 9:28-40 [J. Alroy/J. Alroy/M. Uhen]
2862 J. M. Rensberger. 1979. Early Miocene Promylagaulus. Contributions in Science, Natural History Museum of Los Angeles County 312:1-18 [J. Alroy/J. Alroy/M. Uhen]
7360 J. E. Storer. 2002. Small mammals of the Kealey Springs local fauna (early Arikareean; late Oligocene) of Saskatchewan. Paludicola 3(4):105-133 [J. Alroy/J. Alroy/J. Alroy]
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]