Also known as UNSM Bw-106
Where: Brown County, Nebraska (42.8° N, 100.0° W: paleocoordinates 43.3° N, 96.8° W)
• 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: CC BY (attribution)
Taxonomic list
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Actinopteri | |
Amia calva Linnaeus 1766 bowfin | |
Lepisosteus sp. Agassiz 1843 gar | |
Lepomis microlophus Lee 1980 sunfish | |
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Esox sp.22
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Ictalurus cf. punctatus Rafinesque 1818 catfish | |
Osteichthyes | |
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Reptilia | |
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Aves | |
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Reptilia | |
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Nordenosaurus magnus n. sp.22
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Salvadora paleolineata10, Lampropeltis similis n. sp.8, Nebraskophis skinneri10, Ameiseophis cf. robinsoni10, Elaphe nebraskensis n. sp.8, Neonatrix elongata10, Neonatrix magna n. sp.10, Paleoheterodon tiheni n. gen. n. sp.8
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"Macroclemys sp." = Macrochelys22
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"Geochelone orthopygia" = Geochelone (Hesperotestudo) orthopygia, "Geochelone nordensis n. sp." = Hesperotestudo orthopygia9
"Geochelone orthopygia" = Geochelone (Hesperotestudo) orthopygia Cope 1878 turtle | |
Trionyx quinni n. sp.10
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Mammalia | |
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"Prosthennops xiphodonticus" = Stirtonhyus xiphodonticus1
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Peraceras profectum21, Peraceras superciliosum1, Aphelops megalodus23, "Teleoceras minor" = Teleoceras meridianum20
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Protohippus sp.23, Calippus proplacidus1, "Hippotherium ? quinni" = Cormohipparion quinni26, "Merychippus" republicanus23, Merychippus insignis23, Parahippus cognatus23, Megahippus mckennai23, Hypohippus osborni23, Archaeohippus sp.23
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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"Probassariscus antiquus" = Bassariscus antiquus1
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Brachypsalis modicus1, Plionictis ogygia23, "Plionictis parviloba" = Martes parviloba23, cf. Mionictis pristinus1, Leptarctus primus23, Miomustela cf. madisonae23
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Aelurodon cf. ferox1, Paratomarctus temerarius1, Carpocyon compressus1, Cynarctus saxatilis23, Leptocyon vafer23
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Anchitheriomys fluminis23, Monosaulax skinneri7, "Monosaulax valentinensis" = Temperocastor valentinensis1, Eucastor tortus23
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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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Cupidinimus sp.1, Cupidinimus nebraskensis15, Mioheteromys amplissimus17, Lignimus cf. montis23, Perognathus trojectioansrum23, Perognathus brevidens16
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"Gomphotherium cf. willistoni" = Trilophodon osborni1
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Amphibia | |
Ambystoma minshalli n. sp. Tihen and Chantell 1963 mole salamander
"Cryptobranchus mccalli n. sp." = Andrias matthewi Cook 1917 giant salamander | |
"Scaphiopus bombifrons" = Spea bombifrons22, "Scaphiopus wardorum n. sp." = Scaphiopus (Scaphiopus) wardorum6
"Scaphiopus wardorum n. sp." = Scaphiopus (Scaphiopus) wardorum6 Estes and Tihen 1964 spadefoot toad | |
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Hyla cf. gratiosa4, Hyla cf. versicolor5, Hyla cf. squirella4, Acris cf. crepitans4, Pseudacris nordensis n. sp.4, Pseudacris cf. clarki4
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