Raben Ranch: Chadronian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Leptictis acutidens
(Douglass 1902)
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(1 measurement) | ||||||||||
= informal Novacek leptictid acutidens
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Alroy 2002 | |||||||||
Jaywilsonomys sp.
Ferrusquia and Wood 1969
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= Jaywilsonomyinae indet.
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Alroy 2002 | |||||||||
said to be new; could be Pseudocylindrodon and called into question in any event by Emry and Korth 1996a | ||||||||||
Mammalia
- Multituberculata
- Neoplagiaulacidae
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Ectypodus sp.
Matthew and Granger 1921
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(1 measurement) | ||||||||||
= Ectypodus lovei
Sloan 1966
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Storer 1993 | |||||||||
DUPLICATE REF 3312 or 3313 or 3314 | ||||||||||
Mammalia
- Rodentia
- Ischyromyidae
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Leptotomus sp.
Matthew 1910
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Ischyromys veterior
Matthew 1903
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Ischyromys douglassi
Black 1968
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Mammalia
- Rodentia
- Pipestoneomyidae
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Pipestoneomys bisulcatus
Donohoe 1956
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Mammalia
- Rodentia
- Aplodontidae
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Prosciurus vetustus
(Matthew 1903)
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original and current combination Sciurus (Prosciurus) vetustus | ||||||||||
Mammalia
- Rodentia
- Heliscomyidae
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Heliscomys vetus
Cope 1873
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Mammalia
- Rodentia
- Eomyidae
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Adjidaumo minutus
(Cope 1873)
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Paradjidaumo trilophus
(Cope 1873)
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recombined as Adjidaumo trilophus | ||||||||||
Adjidaumo minimus
(Matthew 1903)
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Yoderimys sp.
Wood 1955
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= Yoderimyinae indet.
Wood 1955
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Alroy 2002 | |||||||||
Centimanomys major
Galbreath 1955
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Cupressimus storeri n. sp.
Ostrander 1983
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recombined as Paranamatomys storeri | ||||||||||
Aulolithomys bounites
Black 1965
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Namatomys lloydi
Black 1965
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this is the "true" Namatomys" | ||||||||||
Mammalia
- Rodentia
- Eutypomyidae
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Eutypomys sp.
Matthew 1905
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= Eutypomyidae indet.
Miller and Gidley 1918
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Alroy 2002 | |||||||||
said to be new | ||||||||||
Mammalia
- Rodentia
- Castoridae
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Agnotocastor sp.
Stirton 1935
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said to be new | ||||||||||
Mammalia
- Rodentia
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Meliakrouniomys sp.
Harris and Wood 1969
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Mammalia
- Rodentia
- Simimyidae
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? Simimys sp.
Wilson 1935
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Mammalia
- Rodentia
- Cylindrodontidae
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Cylindrodon galbreathi
Ostrander 1983
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= Cylindrodon nebraskensis
Hough and Alf 1956
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Alroy 2002 | |||||||||
see Galbreath 1983a, Korth 1992c | ||||||||||
Pseudocylindrodon neglectus
Burke 1935
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Mammalia
- Lagomorpha
- Leporidae
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Palaeolagus temnodon
Douglass 1902
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Megalagus brachyodon
(Matthew 1903)
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Mammalia
- Plagiomenidae
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Thylacaelurus montanus
Russell 1954
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Mammalia
- Primates
- Omomyidae
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Chumashius sp.
Stock 1933
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Mammalia
- Soricidae
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Domnina thompsoni
Simpson 1941
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Domnina gradata
Cope 1873
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(1 measurement) | ||||||||||
Mammalia
- Geolabididae
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Centetodon hendryi
Lillegraven et al. 1981
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Centetodon chadronensis
Lillegraven et al. 1981
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Mammalia
- Proscalopidae
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Oligoscalops sp.
Reed 1961
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said to be new | ||||||||||
Mammalia
- Oligoryctidae
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Oligoryctes cameronensis
Hough 1956
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(1 measurement) | ||||||||||
Mammalia
- Micropternodontidae
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Micropternodus borealis
Matthew 1903
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Micropternodus montrosensis n. sp.
Ostrander 1983
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see Ostrander 1983a | ||||||||||
Mammalia
- Apternodontidae
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Apternodus iliffensis
Galbreath 1953
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= Apternodus sp.
Matthew 1903
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Asher et al. 2002 | |||||||||
Mammalia
- Chiroptera
- Vespertilionidae
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? Stehlinia sp.
Revilliod 1919
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a bat | ||||||||||
Chadronycteris rabenae n. sp.
Ostrander 1983
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see Ostrander 1983a; a bat | ||||||||||
Mammalia
- Perissodactyla
- Brontotheriidae
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Brontotheriidae indet.
(Marsh 1873)
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Mammalia
- Perissodactyla
- Rhinocerotidae
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Trigonias sp.
Lucas 1900
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Mammalia
- Perissodactyla
- Hyracodontidae
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Hyracodon nebraskensis
(Leidy 1850)
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probably OK because Ostrander also recognizes H. priscidens | ||||||||||
Mammalia
- Perissodactyla
- Equidae
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Mesohippus sp.
Marsh 1875
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= Equidae indet.
Gray 1821
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Alroy 2002 | |||||||||
Mammalia
- Camelidae
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Poebrotherium sp.
Leidy 1847
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Mammalia
- Leptochoeridae
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Leptochoeridae indet.
Marsh 1894
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Mammalia
- Protoceratidae
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Pseudoprotoceras longinaris
Cook 1934
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Mammalia
- Hypisodontidae
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Hypisodus minimus
(Cope 1873)
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Mammalia
- Leptomerycidae
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Leptomeryx sp.
Leidy 1853
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may include two species close to L. yoderi and L. speciosus: Heaton and Emry 1996 | ||||||||||
Mammalia
- Merycoidodontidae
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Merycoidodon sp.
Leidy 1848
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Mammalia
- Carnivora
- Amphicyonidae
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Daphoenus sp.
Leidy 1853
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= Amphicyonidae indet.
Haeckel 1886
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Alroy 2002 | |||||||||
could be Brachyrhynchocyon | ||||||||||
Mammalia
- Carnivora
- Mustelidae
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Mustelidae indet.
Fischer 1817
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Mammalia
- Carnivora
- Ursidae
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Parictis sp.
Scott 1893
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Mammalia
- Carnivora
- Canidae
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Hesperocyon sp.
Scott 1890
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Mammalia
- Macroscelidea
- Amphilemuridae
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Ankylodon sp.
Patterson and McGrew 1937
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Mammalia
- Apatemyidae
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Apatemys aff. downsi
Gazin 1958
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Tornow and Arbor 2017 | |||||||||
Sinclairella dakotensis
Jepsen 1934
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(1 measurement) | ||||||||||
Mammalia
- Pantolestidae
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? Pantolestidae indet.
Cope 1884
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Mammalia
- Groeberida
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Peratherium fugax
(Cope 1873)
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corrected as Herpetotherium fugax | ||||||||||
Mammalia
- Groeberida
- Nototheriidae
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Nanodelphys minutus
McGrew 1937
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= Nanodelphys hunti
Cope 1873
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Alroy 2002 | |||||||||
recombined as Nanodelphys huntii | ||||||||||
Idiogenomys ozziei n. gen., n. sp.
Ostrander 1983
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misspelt "Idogenomys"; genus is Mammalia incertae sedis and unknown elsewhere; type, see Ostrander 1983a | ||||||||||
Reptilia
- Testudines
- Testudinidae
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Stylemys sp.
Leidy 1851
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Reptilia
- Testudines
- Geoemydidae
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Ptychogastrini indet.
(De Stefano 1903)
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Hutchison 1996 | 1 specimen | ||||||||
SDSM 10052 "undescribed genus and species" | ||||||||||
Reptilia
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Peltosaurus sp.
Cope 1873
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Reptilia
- Anguidae
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Glyptosaurus sp.
Marsh 1871
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Reptilia
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Aves indet.
Linnaeus 1758
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus sp.
Agassiz 1843
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Actinopteri
- Amiiformes
- Amiidae
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Amia sp.
Linnaeus 1766
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see common names |
Geography
Country: | United States | State/province: | Nebraska | County: | Sioux |
Coordinates: | 42.4° North, 103.8° West (view map) | ||||
Paleocoordinates: | 43.8° North, 95.1° West | ||||
Basis of coordinate: | based on political unit | ||||
Geographic resolution: | small collection |
Time
Period: | Paleogene | Epoch: | Eocene |
Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
*Period: | Tertiary | ||
Key time interval: | Chadronian | ||
Age range of interval: | 37.20000 - 33.90000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Chadron | Member: | Big Cottonwood Creek | ||
Local section: | PineR | Local bed: | 1 | ||
Local order: | bottom to top | ||||
Stratigraphy comments: member assignment based on LaGarry pers. commun. 19 May 2005 |
Lithology and environment
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Collection methods: | bulk,surface (float),sieve,field collection |
Collection size: | 12000 specimens |
Rock censused: | 1273 kg |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | SDSM |
Collection method comments: large and small mammals both are "scattered about the surface" but most microvertebrates coming from "Approximately 2,800 pounds of sediment were obtained from three sub-localities... by employing the [standard] screen washing techniques" (Ostrander 1983) | |
Taxonomic list comments:apparently in the Trunk Butter Member sensu LaGarry and LaGarry 1999 much of this list repeated by Ostrander 1987 entire section is reversed except top 15 feet; could correlate with C15n or C16n: Prothero 1996c NE 1/4 sec 31 T34N R53W "Cylindrodon fontis": see discussion of this species by Emry and Korth 1996a |
Metadata
Also known as: | SDSM V-772 | ||
Database number: | 17014 | ||
Authorizer: | J. Alroy, P. Holroyd | Enterer: | J. Alroy, P. Holroyd |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 1993-02-18 00:00:00 | Last modified: | 2007-09-08 15:35:28 |
Access level: | the public | Released: | 1993-02-18 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
2716. | G. E. Ostrander. 1985. Correlation of the early Oligocene (Chadronian) in northwestern Nebraska. Dakoterra 2(2):205-231 [J. Alroy/J. Alroy/P. Holroyd] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
34290 | J. H. Hutchison. 1996. Testudines. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 337-353 [J. Alroy/J. Alroy] | |
3312 | J. E. Storer. 1993. Multituberculates of the Lac Pelletier Lower Fauna, Late Eocene (Duchesnean), of Saskatchewan. Canadian Journal of Earth Sciences 30:1613-1617 [J. Alroy/J. Alroy/J. Alroy] | |
62705 | M. A. Tornow and T. A. Arbor. 2017. Apatemyids (Mammalia, Apatotheria) from the middle Chadronian (late Eocene) of Sioux County, Nebraska, USA. Palaeontologia Electronica 20.1.9A:1-16 [P. Holroyd/P. Holroyd/P. Holroyd] |