Monroe Creek Formation

Last updated
Monroe Creek Formation
Stratigraphic range: Paleogene
Type Geological formation
Location
Region South Dakota
Country United States

The Monroe Creek Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Paleogene period.

Contents

Fossil content

Color key
Taxon Reclassified taxonTaxon falsely reported as presentDubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Mammals

Carnivorans

Carnivorans reported from the Monroe Creek Formation
GenusSpeciesPresenceMaterialNotesImages
Enhydrocyon E. crassidens Shannon County, South Dakota. [1] Crushed skull (AMNH 12886) & other skull elements. [1] [2] A hesperocyonine dog.
A Lower Miocene fauna from South Dakota (1907) fig. 6.png
E. pahinsintewakpaMultiple specimens. [1] A hesperocyonine dog.
Enhydrocyon restoration head.png
Leptocyon L. delicatusPorcupine Creek, South Dakota. [2] [3] Left partial ramus (ACM 31102). [2] [3] A canine dog, may instead be from the Harrison Formation.
Leptocyon head restoration.jpg
Mammacyon M. obtusidensWounded Knee Area. [2] Skull & partial skeleton (ACM 34-41). [2] A bear-dog.
Neocynodesmus N. delicatusPorcupine Creek, Wounded Knee Area. [2] Left mandible (ACM 31102). [2] Junior synonym of Leptocyon .
Nimravus N. sectatorWounded Knee Area. [2] Left ramus (AMNH 12882). [2] Possibly instead from the Harrison Formation.
Nothocyon N. geismarianusWounded Knee Area. [2] Fragmentary ramus (AMNH 12872). [2] An arctoid formerly thought to be a canid.
N. near latidensWounded Knee Area. [2] Jaw fragment (AMNH 12873). [2] Reassigned to Phlaocyon.
Promartes P. gemmarosaeWounded Knee Area. [2] Nearly-complete skeleton (ACM 31-33). [2] A mustelid.

Eulipotyphlans

Eulipotyphlans reported from the Monroe Creek Formation
GenusSpeciesPresenceMaterialNotesImages
Proscalops P. sp. indeterminateWounded Knee Area. [2] Isolated molar (SDSM 5899). [2] A proscalopid.

Rodents

Rodents reported from the Monroe Creek Formation
GenusSpeciesPresenceMaterialNotesImages
Allomys A. harkseniWounded Knee Area. [2] Molars. [2] An aplodontid.
Capatanka C. brachycepsWounded Knee Area. [2] Skull (AMNH 12902). [2] A castorid, possibly instead from the Harrison Formation.
Meniscomys M. sp. indeterminateWounded Knee Area. [2] Isolated tooth (SDSM 59157). [2] An aplodontid.
Palaeocastor P. simplicidensWounded Knee Area. [2] Partial cranium (AMNH 12900). [2] A castorid.
Pleurolicus P. dakotensisWounded Knee Area. [2] Left ramus (AMNH 12893). [2] A gopher.
Promylagaulus P. cf. riggsiWounded Knee Area. [2] Isolated molar. [2] A mylagaulid.

Ungulates

Ungulates reported from the Monroe Creek Formation
GenusSpeciesPresenceMaterialNotesImages
Nanotragulus N. ordinatusWounded Knee Area. [2] Mandibles. [2] May instead be from the Harrison Formation.
Parahippus P. pristinusWounded Knee Area. [2] Hind feet (AMNH 12922). [2] May instead be from the Harrison Formation.

Reptiles

Squamates

Squamates reported from the Monroe Creek Formation
GenusSpeciesPresenceMaterialNotesImages
Peltosaurus P. granulosusSharps Corner, South Dakota. [4] Multiple specimens. [4] A glyptosaurine also known from the Sharps Formation.
Peltosaurus.JPG

See also

References

  1. 1 2 3 Wang, Xiaoming (1994). "Phylogenetic systematics of the Hesperocyoninae (Carnivora, Canidae)". Bulletin of the AMNH (221): 6–207. hdl:2246/829.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Macdonald, J. R. (James Reid); Thomson, Albert Report of the expedition of 1906 to the Miocene on Pine Ridge Indian Reservation (1963). "The Miocene faunas from the Wounded Knee area of western South Dakota. Bulletin of the AMNH; v. 125, article 3". hdl:2246/1259.{{cite journal}}: Cite journal requires |journal= (help)CS1 maint: numeric names: authors list (link)
  3. 1 2 Tedford, Richard H.; Wang, Xiaoming; Taylor, Beryl E. (2009). Phylogenetic systematics of the North American fossil Caninae (Carnivora, Canidae). (Bulletin of the American Museum of Natural History, no. 325). [New York] : American Museum of Natural History. hdl:2246/5999.
  4. 1 2 Scarpetta, Simon G. (October 2019). "Peltosaurus granulosus (Squamata, Anguidae) from the Middle Oligocene of Sharps Corner, South Dakota, and the Youngest Known Chronostratigraphic Occurrence of Glyptosaurinae" . Journal of Vertebrate Paleontology. 39 (3) e1622129. Bibcode:2019JVPal..39E2129S. doi:10.1080/02724634.2019.1622129. ISSN   0272-4634.


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