Also known as Third Bench
Where: Fremont County, Wyoming (43.2° N, 108.2° W: paleocoordinates 44.0° N, 104.6° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Arikaree Formation, Hemingfordian (20.4 - 16.0 Ma)
Environment/lithology: eolian; lithology not reported
Size class: macrofossils
Reposited in the UCMP
Primary reference: J. Munthe. 1988. Miocene mammals of the Split Rock area, Granite Mountains basin, central Wyoming. University of California Publications in Geological Sciences 126:1-136 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 19073: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
"ash deposit within the Split Rock level" dated at 17.1 (= 17.45) Ma (KA; no error stated): Munthe and Coombs 1979
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| Reptilia | |
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Phrynosomatidae indet.4 Fitzinger 1843 squamates "Sceloporine morphotype" and "sand lizard morphotype", a reidentification of some ? Sceloporus sp.
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Caeruleodentatus lovei n. gen. n. sp.4
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| Mammalia | |
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Mustelidae indet. Fischer 1817 mustelid carnivore | |
Borophaginae indet.1, Cynarctoides acridens, "Tomarctus kelloggi" = Paracynarctus kelloggi, "Tomarctus optatus" = Protomarctus optatus
"Tomarctus kelloggi" = Paracynarctus kelloggi Merriam 1911 bone-crushing dog confirmed by Wang et al. 1999
"Tomarctus optatus" = Protomarctus optatus Matthew 1924 bone-crushing dog confirmed by Wang et al. 1999
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Bouromeryx sp. Skinner et al. 1977 ruminant
cf. Barbouromeryx sp. Frick 1937 ruminant | |
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Cosoryx (Paracosoryx) wilsoni Frick 1937 pronghorn
Merycodus cf. sabulonis Matthew and Cook 1909 pronghorn | |
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Camelidae indet. Gray 1821 camel
Blickomylus galushai Frick and Taylor 1968 camel | |
"Brachycrus sweetwaterensis" = Brachycrus laticeps, "Brachycrus vaughani" = Brachycrus laticeps
"Brachycrus sweetwaterensis" = Brachycrus laticeps Douglass 1900 oreodont
"Brachycrus vaughani" = Brachycrus laticeps Douglass 1900 oreodont | |
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Hypohippus sp. Leidy 1858 anchitheriine horse | |
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Tylocephalonyx skinneri Coombs 1979 chalicothere | |
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Rhinocerotidae indet. Gray 1821 rhinoceros | |
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Mesoscalops scopelotemos Reed 1960 placental | |
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Brachyerix macrotis Matthew 1933 hedgehog | |
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Oreolagus nebrascensis McGrew 1941 pika | |
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? Desmatolagus schizopetrus Dawson 1965 rabbit | |
"Plesiosminthus sabrae" = Schaubeumys sabrae
"Plesiosminthus sabrae" = Schaubeumys sabrae Black 1958 jumping mouse | |
"Mesogaulus novellus" = Galbreathia novellus, "Mesogaulus vetus" = Alphagaulus vetus
"Mesogaulus novellus" = Galbreathia novellus Matthew 1924 rodent | |
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Miospermophilus wyomingensis Black 1963 squirrel
Protospermophilus kelloggi Black 1963 squirrel | |
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Schizodontomys harkseni Macdonald 1970 rodent
Harrymys irvini Munthe 1988 rodent | |