Mailbox (Neogene of the United States)

Also known as Mailbox Prospect; UNSM Ap-125

Where: Antelope County, Nebraska (42.4° N, 98.1° W: paleocoordinates 42.7° N, 96.4° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Late/Upper Hemphillian (10.3 - 4.9 Ma)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collection methods: bulk, sieve

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18247: authorized by John Alroy, entered by John Alroy on 05.08.1992

Creative Commons license: CC BY (attribution)

Taxonomic list

• overlies Middle Landing, an unpublished locality
unclassified
  -
Osteichthyes
 Salientia - Pelobatidae
Scaphiopus sp.2 Holbrook 1836 spadefoot toad
 Salientia - Ranidae
Rana sp.2 Linnaeus 1758 frog
"Rana cf. R. pipiens... complex"
Rana cf. catesbeiana2 Shaw 1802 American bullfrog
 Salientia - Hylidae
Hyla sp.2 Laurenti 1768 tree frog
Reptilia
 Squamata - Viperidae
Crotalus sp.3 Linnaeus 1758 rattlesnake
 Squamata - Colubridae
Paleoheterodon tiheni3 Holman 1964 colubrid snake
Heterodon cf. platyrhinos3 Latreille 1801 eastern hognosed snake
Colubrinae indet.3 Oppel 1811 colubrid snake
Coluber or Masticophis
Elaphe cf. guttata3 Linnaeus 1766 corn snake
Lampropeltis triangulum3 Lacépède 1788 milk snake
Pituophis melanoleucus3 Daudin 1803 pine snake
Thamnophis sp.3 Fitzinger 1843 garter snake
Nerodia sp.3 Baird and Girard 1853 water snake
Mammalia
 Rodentia - Cricetidae
Bensonomys sp.1 Gazin 1942 mouse
Neotoma cf. sawrockensis Hibbard 1967 pack rat
Prosomys mimus Shotwell 1956 mouse
Onychomys cf. larabeei grasshopper mouse
 Rodentia - Sciuridae
Spermophilus sp., "Paenemarmota cf. nevadensis" = Marmota nevadensis
Spermophilus sp. Cuvier 1825 ground squirrel
"Paenemarmota cf. nevadensis" = Marmota nevadensis Kellogg 1910 marmot
 Rodentia - Geomyidae
Geomyidae indet.1 Bonaparte 1845 pocket gopher
 Rodentia - Castoridae
Castor cf. californicus Kellogg 1911 beaver
Dipoides sp. Jaeger 1835 beaver
 Rodentia - Mylagaulidae
Ceratogaulus hatcheri1 Gidley 1907 rodent
 Rodentia - Zapodidae
Pliozapus cf. solus Wilson 1936 jumping mouse
 Lagomorpha - Leporidae
Hypolagus vetus Kellogg 1910 rabbit
 Lagomorpha - Ochotonidae
Ochotona cf. spanglei Shotwell 1956 pika
 Lipotyphla - Talpidae
Hesperoscalops sp.1 Hibbard 1941 mole
 Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894 rhinoceros
 Perissodactyla - Tapiridae
Tapirus sp. Brisson 1762 tapir
 Perissodactyla - Equidae
Nannippus sp. Matthew 1926 hipparionine horse
Neohipparion cf. eurystyle Cope 1893 hipparionine horse
this could easily be wrong
Dinohippus cf. leidyanus Osborn 1918 horse
 Tribosphenida - Plesiosoricidae
Plesiosorex sp.1 Pomel 1848 placental
 Tribosphenida - Soricidae
? Paracryptotis sp. Hibbard 1950 shrew
cf. Alluvisorex sp. Hutchison 1966 shrew
 Carnivora - Mustelidae
Pliotaxidea nevadensis Butterworth 1916 badger
 Carnivora - Canidae
Eucyon cf. davisi1 Merriam 1911 canine
 Xenarthra - Megalonychidae
Megalonyx cf. curvidens Matthew 1924 edentate
 Proboscidea - Gomphotheriidae
Gomphotheriidae indet. Hay 1922 gomphothere
 Artiodactyla - Tayassuidae
Tayassuinae indet.1 Palmer 1897 peccary
 Artiodactyla - Camelidae
Megatylopus cf. gigas, "Hemiauchenia cf. vera" = Pleiolama vera
Megatylopus cf. gigas Matthew and Cook 1909 camel
"Hemiauchenia cf. vera" = Pleiolama vera Matthew 1909 camel
 Artiodactyla - Palaeomerycidae
cf. Pediomeryx sp. Stirton 1936 ruminant
 Artiodactyla - Antilocapridae
Antilocapridae indet. Owen 1841 pronghorn