Mailbox: Late/Upper Hemphillian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Urotrichinae indet.
Amphibia - Temnospondyli - Pelobatidae
Scaphiopus sp. Holbrook 1836
Parmley 1992
Amphibia - Temnospondyli - Ranidae
Rana sp. Linnaeus 1758
Parmley 1992
"Rana cf. R. pipiens... complex"
Rana cf. catesbeiana Shaw 1802
Parmley 1992
Amphibia - Temnospondyli - Hylidae
Hyla sp. Laurenti 1768
Parmley 1992
Reptilia - Colubridae
Colubrinae indet. Oppel 1811
Parmley and Holman 1995
Coluber or Masticophis
Lampropeltis triangulum Lacépède 1788
Parmley and Holman 1995
Elaphe cf. guttata (Linnaeus 1766)
Parmley and Holman 1995
Pituophis melanoleucus (Daudin 1803)
Parmley and Holman 1995
Nerodia sp. Baird and Girard 1853
Parmley and Holman 1995
Thamnophis sp. Fitzinger 1843
Parmley and Holman 1995
Heterodon cf. platyrhinos (Latreille 1801)
Parmley and Holman 1995
Paleoheterodon tiheni Holman 1964
Parmley and Holman 1995
Reptilia - Crotalidae
Crotalus sp. Linnaeus 1758
Parmley and Holman 1995
Mammalia - Megalonychidae
Megalonyx cf. curvidens Matthew 1924
Mammalia - Proboscidea - Gomphotheriidae
Gomphotheriidae indet. Hay 1922
Mammalia - Carnivora - Mustelidae
Pliotaxidea nevadensis (Butterworth 1916)
Mammalia - Carnivora - Canidae
Canis davisi Merriam 1911
    = Eucyon cf. davisi Merriam 1911
Alroy 2002
Mammalia - Perissodactyla - Equidae
Neohipparion cf. eurystyle (Cope 1893)
this could easily be wrong
Nannippus sp. (Matthew 1926)
Dinohippus cf. leidyanus (Osborn 1918)
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894
Mammalia - Perissodactyla - Tapiridae
Tapirus sp. Brisson 1762
Mammalia - Tayassuidae
Prosthennops sp. Matthew and Gidley 1904
    = Tayassuinae indet. Palmer 1897
Alroy 2002
Mammalia - Camelidae
Hemiauchenia cf. vera (Matthew 1909)
recombined as Pleiolama vera
Megatylopus cf. gigas (Matthew and Cook 1909)
Mammalia - Antilocapridae
Antilocapridae indet. Gray 1866
Mammalia - Palaeomerycidae
cf. Pediomeryx sp. Stirton 1936
Mammalia - Talpidae
Scalopus sp. Geoffroy 1803
    = Hesperoscalops sp. Hibbard 1941
Alroy 2002
synonym of Scalopus
Mammalia - Soricidae
? Paracryptotis sp. Hibbard 1950
cf. Alluvisorex sp. Hutchison 1966
Mammalia - Plesiosoricidae
Meterix sp. Hall 1929
    = Plesiosorex sp. Pomel 1848
Alroy 2002
Mammalia - Lagomorpha - Ochotonidae
Ochotona cf. spanglei Shotwell 1956
Mammalia - Lagomorpha - Leporidae
Hypolagus vetus (Kellogg 1910)
Mammalia - Rodentia - Mylagaulidae
Epigaulus hatcheri Gidley 1907
    = Ceratogaulus hatcheri Gidley 1907
Alroy 2002
Mammalia - Rodentia - Zapodidae
Pliozapus cf. solus Wilson 1936
Mammalia - Rodentia - Cricetidae
Calomys sp. (Waterhouse 1837)
    = Bensonomys sp. Gazin 1942
Alroy 2002
Onychomys cf. larabeei
Neotoma cf. sawrockensis Hibbard 1967
Prosomys mimus Shotwell 1956
Mammalia - Rodentia - Sciuridae
Paenemarmota cf. nevadensis (Kellogg 1910)
recombined as Marmota nevadensis
Spermophilus sp. Cuvier 1825
Mammalia - Rodentia - Castoridae
Dipoides sp. Jaeger 1835
Castor cf. californicus Kellogg 1911
Mammalia - Rodentia - Geomyidae
Parapliosaccomys sp. Shotwell 1967
    = Geomyidae indet. Bonaparte 1845
Alroy 2002
see common names

Geography
Country:United States State/province:Nebraska County:Antelope
Coordinates: 42.4° North, 98.1° West (view map)
Paleocoordinates:42.7° North, 96.4° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Neogene
10 m.y. bin:Cenozoic 6
*Period:Late/Upper Tertiary *Epoch:Late/Upper Miocene
*Local age/stage:Late/Upper Hemphillian
Key time interval:Late/Upper Hemphillian
Age range of interval:9.40000 - 4.70000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:bulk,sieve
Reason for describing collection:taxonomic analysis
Taxonomic list comments:overlies Middle Landing, an unpublished locality
Metadata
Also known as:Mailbox Prospect; UNSM Ap-125
Database number:18247
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:1992-08-05 00:00:00 Last modified:2011-03-27 22:35:03
Access level:the public Released:1992-08-05 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3510. M. R. Voorhies. 1990. Vertebrate biostratigraphy of the Ogallala Group in Nebraska. In T. C. Gustavson (ed.), Geologic Framework and Regional Hydrology: Upper Cenozoic Blackwater Draw and Ogallala Formations, Great Plains 115-151 [J. Alroy/J. Alroy/J. Marcot]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
7579 D. Parmley. 1992. Frogs in Hemphillian deposits of Nebraska, with the description of a new species of Bufo. Journal of Herpetology 26(3):274-281 [J. Alroy/J. Alroy/J. Alroy]
7602 D. Parmley and J. A. Holman. 1995. Hemphillian (late Miocene) snakes from Nebraska, with comments on Arikareean through Blancan snakes of midcontinental North America. Journal of Vertebrate Paleontology 15(1):79-95 [J. Alroy/J. Alroy/J. Alroy]