Also known as UNSM Bw-106
Where: Brown County, Nebraska (42.8° N, 100.0° W)
• Paleocoordinates: 46.0° N, 93.3° W (Wright 2013)
• coordinate stated in text
• small collection-level geographic resolution
When: Cornell Dam Member (Valentine Formation), Barstovian (16.3 - 12.5 Ma)
• Hurlbut Ash in CD Mbr. dated at 11.6 +/- 1.1 (recalibrated from 13.6 +/- 1.3) Ma FT on glass; this date is anomalous and the recalibration was never justified
• group of beds-level stratigraphic resolution
Environment/lithology: "channel"; unlithified sandstone
Size classes: macrofossils, mesofossils
Collected by J. A. Holman, M. Voorhies in 1960, 1962, 1971 (MSU), 1974 - 1979 (MSU), 1981; reposited in the UMMP, UNSM, USNM
Collection methods: bulk, quarrying, sieve
• additional specimens are in the Michigan State University collection, which was obtained from "a five ton sample of matrix" (Holman 1973)
Primary reference: J. A. Tihen and C. J. Chantell. 1963. Urodele remains from the Valentine Formation of Nebraska. Copeia 1963(3):505-510 [J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 18284: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Chris Bell, Jonathan Marcot, Mark Uhen, Matthew Carrano and Philip Mannion
Creative Commons license: CC0 (CC0)
Taxonomic list
unclassified | |
Mammalia | |
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"Gomphotherium cf. willistoni" = Trilophodon osborni1
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Anchitheriomys fluminis23, Monosaulax skinneri7, Eucastor tortus23, "Monosaulax valentinensis" = Temperocastor valentinensis1
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Phelosaccomys sp.19 Korth and Reynolds 1994 pocket gopher consistent with Evander 1999; "? Parapliosaccomys sp." said to be new; "P. annae" of Korth 1987
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Perognathus brevidens16, Perognathus trojectioansrum23, Mioheteromys amplissimus17, Cupidinimus sp.1, Cupidinimus nebraskensis15, Lignimus cf. montis23
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"Teleoceras minor" = Teleoceras meridianum20, Peraceras superciliosum1, Peraceras profectum21, Aphelops megalodus23
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Parahippus cognatus23, Hypohippus osborni23, Megahippus mckennai23, Archaeohippus sp.23, Protohippus sp.23, Calippus proplacidus1, "Hippotherium ? quinni" = Cormohipparion quinni26, "Merychippus" republicanus23, Merychippus insignis23
Protohippus sp.23 Leidy 1858 horse said to be a new species; less hypsodont, more complex fossettes than P. perditus; probably not P. vetus either
"Merychippus" republicanus23 Osborn 1918 horse i.d. checked by JA 24 October 1990, on basis of figures and description of species provided by Webb and Hulbert 1986; the same species as USNM 1352 is present
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"Prosthennops xiphodonticus" = Stirtonhyus xiphodonticus1
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Leptocyon vafer23, Cynarctus saxatilis23, Aelurodon cf. ferox1, Carpocyon compressus1, Paratomarctus temerarius1
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"Probassariscus antiquus" = Bassariscus antiquus1
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Plionictis ogygia23, "Plionictis parviloba" = Martes parviloba23, Brachypsalis modicus1, cf. Mionictis pristinus1, Miomustela cf. madisonae23, Leptarctus primus23
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Reptilia | |
"Geochelone orthopygia" = Geochelone (Hesperotestudo) orthopygia, "Geochelone nordensis n. sp." = Hesperotestudo orthopygia9
"Geochelone orthopygia" = Geochelone (Hesperotestudo) orthopygia Cope 1878 turtle | |
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"Macroclemys sp." = Macrochelys22
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Trionyx quinni n. sp.10
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Aves | |
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Reptilia | |
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Nordenosaurus magnus n. sp.22
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Paleoheterodon tiheni n. gen. n. sp.8, Neonatrix magna n. sp.10, Neonatrix elongata10, Nebraskophis skinneri10, Ameiseophis cf. robinsoni10, Elaphe nebraskensis n. sp.8, Salvadora paleolineata10, Lampropeltis similis n. sp.8
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Amphibia | |
Acris cf. crepitans4, Hyla cf. gratiosa4, Hyla cf. versicolor5, Hyla cf. squirella4, Pseudacris cf. clarki4, Pseudacris nordensis n. sp.4
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"Scaphiopus wardorum n. sp." = Scaphiopus (Scaphiopus) wardorum6, "Scaphiopus bombifrons" = Spea bombifrons22
"Scaphiopus wardorum n. sp." = Scaphiopus (Scaphiopus) wardorum6 Estes and Tihen 1964 spadefoot toad | |
"Cryptobranchus mccalli n. sp." = Andrias matthewi Cook 1917 giant salamander
Ambystoma minshalli n. sp. Tihen and Chantell 1963 mole salamander | |
Actinopteri | |
Lepomis microlophus Lee 1980 sunfish | |
Ictalurus cf. punctatus Rafinesque 1818 catfish | |
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Esox sp.22
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Amia calva Linnaeus 1766 bowfin | |
Lepisosteus sp. Agassiz 1843 gar | |
Osteichthyes | |
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