Cottonwood Creek (UNSM Dw-118): Early/Lower Hemingfordian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Amphibia
- Temnospondyli
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Anura indet.
(Fischer von Waldheim 1813)
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| "several anurans" | ||||||||||
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Reptilia
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Aves indet.
Linnaeus 1758
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| "at least two avians" | ||||||||||
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Reptilia
- Serpentes
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Serpentes indet.
Linnaeus 1758
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| "several snakes" | ||||||||||
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Reptilia
- Iguanidae
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Iguanidae indet.
Oppel 1811
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| "at least two iguanid lizards" | ||||||||||
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Reptilia
- Testudines
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Chelonia indet.
(Latreille 1800)
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| synonym of Testudines | ||||||||||
| "two chelonians" | ||||||||||
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Mammalia
- Carnivora
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Carnivora indet.
Bowdich 1821
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Mammalia
- Merycoidodontidae
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Merychyus sp.
Leidy 1858
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Mammalia
- Camelidae
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? Oxydactylus sp.
Peterson 1904
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Mammalia
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Cervidae indet.
Gray 1821
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= Ruminantia indet.
Scopoli 1777
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Alroy 2002 | |||||||||
| (small) | ||||||||||
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Mammalia
- Palaeomerycidae
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Aletomeryx sp.
Lull 1920
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Mammalia
- Talpidae
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Mystipterus (Mydecodon) martini
(Wilson 1960)
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Ostrander 1986 | |||||||||
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Scalopoides isodens
Wilson 1960
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Bailey 2004 | |||||||||
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Mammalia
- Proscalopidae
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Mesoscalops scopelotemos
Reed 1960
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Ostrander 1986 | |||||||||
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Mammalia
- Soricidae
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Pseudotrimylus sp.
Gureev 1971
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Bailey 2004 | |||||||||
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Mammalia
- Erinaceidae
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Parvericius montanus
Koerner 1940
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Ostrander 1986 | |||||||||
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Mammalia
- Lagomorpha
- Ochotonidae
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Oreolagus sp.
Dice 1917
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= Oreolagus nebrascensis
McGrew 1941
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Bailey 2004 | |||||||||
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Mammalia
- Lagomorpha
- Leporidae
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Archaeolagus sp.
Dice 1917
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Bailey 2004 | |||||||||
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Mammalia
- Rodentia
- Mylagaulidae
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Mylagaulidae indet.
Cope 1881
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= Mesogaulus paniensis
Matthew 1902
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Bailey 2004 | |||||||||
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Mammalia
- Rodentia
- Zapodidae
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Plesiosminthus sp.
Viret 1926
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= Zapodidae indet.
Coues 1875
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Alroy 2002 | |||||||||
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= Plesiosminthus clivosus
Galbreath 1953
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Bailey 2004 | |||||||||
| recombined as Schaubeumys clivosus | ||||||||||
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Mammalia
- Rodentia
- Cricetidae
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Yatkolamys edwardsi n. sp.
Martin and Corner 1980
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Mammalia
- Rodentia
- Entoptychidae
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Ziamys hugeni
Korth et al. 1990
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Bailey 2004 | |||||||||
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Mammalia
- Rodentia
- Sciuridae
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Miospermophilus sp.
Black 1963
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Bailey 2004 | |||||||||
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Sciuridae indet.
Gray 1821
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= Protospermophilus sp.
Gazin 1930
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Bailey 2004 | |||||||||
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Mammalia
- Rodentia
- Heteromyidae
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Stratimus strobeli n. sp.
Korth et al. 1990
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Korth et al. 1990 | |||||||||
| also at UNSM Dw-117; "Heteromyidae indet." in part | ||||||||||
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Schizodontomys amnicolus
Korth et al. 1990
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Korth et al. 1990 | |||||||||
| "Heteromyidae indet." in part | ||||||||||
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Proheteromys sp.
Wood 1932
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Bailey 2004 | |||||||||
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Harrymys magnus
(Wood 1932)
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Bailey 2004 | |||||||||
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Actinopteri
- Cyprinodontiformes
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Cyprinodontiformes indet.
Bertin 1958
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| "a cypriniform fish" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Dawes |
| Coordinates: | 42.5° North, 103.0° West (view map) | ||||
| Paleocoordinates: | 43.2° North, 99.1° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Burdigalian | 10 m.y. bin: | Cenozoic 5 |
| *Period: | Late/Upper Tertiary | *Epoch: | Early/Lower Miocene | *Local age/stage: | Hemingfordian |
| Key time interval: | Early/Lower Hemingfordian | ||
| Age range of interval: | 18.50000 - 16.30000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Runningwater | ||||
| Local section: | PineR | Local bed: | 16 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: formation given as Marsland, which is equivalent to Runningwater | |||||
Lithology and environment
| Primary lithology: | "cross stratification",brown poorly lithified sandstone |
| Lithology description: "brown, crossbedded, semiconsolidated sands" | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Disassociated major elements: | some |
Collection methods and comments
| Collection methods: | bulk,sieve,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | UNSM |
| Collection method comments: collected by screenwashing of sediments exposed in road cuts; see Ostrander 1986 | |
| Taxonomic list comments:possibly relevant: "Merycochoerus proprius" and "M. proprius magnus" Schultz and Falkenbach 1940: "Cottonwood Creek" near Hemingford | |
Metadata
| Database number: | 17892 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 1995-10-18 00:00:00 | Last modified: | 2022-05-04 04:48:28 |
| Access level: | the public | Released: | 1995-10-18 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 2428. | 5% 31880 | L. D. Martin and R. G. Corner. 1980. A new genus of cricetid rodent from the Hemingfordian (Miocene) of Nebraska. University of Kansas Paleontological Contributions Vertebrata 103:1-5 [J. Alroy/J. Alroy/J. Alroy] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
| 19303 | B. E. Bailey. 2004. Biostratigraphy and biochronology of early Arikareean through late Hemingfordian small mammal faunas from the Nebraska Panhandle and adjacent areas. Paludicola 4(3):81-113 [J. Alroy/J. Alroy] | |
| 2152 | 5% 20540 | W. W. Korth, B. E. Bailey, and R. M. Hunt, Jr. 1990. Geomyoid rodents from the early Hemingfordian (Miocene) of Nebraska. Annals of Carnegie Museum 59(1):25-47 [J. Alroy/J. Alroy/M. Carrano] |
| 2718 | G. E. Ostrander. 1986. Insectivora (Mammalia) from the Miocene (Hemingfordian) of western Nebraska. Transactions of the Nebraska Academy of Sciences 14:21-24 [J. Alroy/J. Alroy/J. Alroy] |