Also known as SDSM V-5314; Thomas Fox Ranch; Joe Thin Elk Gravel Pits
Where: Mellette County, South Dakota (43.4° N, 100.6° W: paleocoordinates 43.9° N, 98.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Thin Elk Formation, Clarendonian (12.5 - 9.4 Ma)
• member-level stratigraphic resolution
Environment/lithology: "channel"; unlithified sandstone and carbonate
Size classes: macrofossils, mesofossils
Reposited in the SDSM
Collection methods: bulk, salvage, quarrying, chemical, sieve,
• large vertebrates collected from "residue" of sand and gravel screened during a quarrying operation (Macdonald 1960); small vertebrates collected by "washing and screening techniques [sand layer] or by treatment of fossil-bearing rocks with chemicals [calcareous lens]" (Holman 1973)
Primary reference: M. Green. 1971. Additions to the Mission vertebrate fauna, Lower Pliocene of South Dakota. Journal of Paleontology 45(3):486-490 [J. Alroy/J. Alroy/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 18268: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
•"Aelurodon cf. inflatus" NISP 1: specimen not mentioned at all by Wang et al. 1999
Reptilia | |
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Mammalia | |
Gomphotherium sp. Burmeister 1837 gomphothere | |
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Tapirus sp. Brisson 1762 tapir | |
Hippotherium sp. Kaup 1832 hipparionine horse "Neohipparion cf. occidentale or whitneyi": JA pers. obs. 13.7.96: data of Macdonald 1960 are ambiguous; dental measurements overlap completely with N. affine and "C. occidentale," and metapodial measurements overlap with those of Webb 1969 (Burge "Neohipparion," Minnechaduza "N. occidentale," type of "N. whitneyi"), Bernor et al. 1990 (Xmas-Kat "C. occidentale"), etc.; however, I believe that Hippotherium is present based on 1) low frequency of pli caballinids (should be common in true Neohipparion), and 2) suggestion that some or many pli caballins are multiple (should always be single in true Neohipparion); including metapodials
Pseudhipparion cf. gratum Leidy 1869 hipparionine horse including 12 metapodials that could be Calippus
Hypohippus sp. Leidy 1858 anchitheriine horse | |
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"Prosthennops cf. niobrarensis" = Colbertchoerus niobrarensis9
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"Merychyus cf. novomexicanus" = Ustatochoerus medius novomexicanus7
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Procamelus grandis Gregory 1939 camel
Pliauchenia magnifontis Gregory 1939 camel | |
Aelurodon taxoides, "Tomarctus euthos" = Paratomarctus euthos, Carpocyon robustus8, Leptocyon matthewi6
"Tomarctus euthos" = Paratomarctus euthos McGrew 1935 bone-crushing dog | |
Ischyrocyon gidleyi Matthew 1902 bear-dog | |
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Cricetidae indet. Fischer von Waldheim 1817 mouse | |
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Amphibia | |
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