South-southwest of Franklin (Miocene of the United States)

Where: Franklin County, Nebraska (40.1° N, 99.0° W: paleocoordinates 41.1° N, 95.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Ogallala Group, Barstovian (16.0 - 13.6 Ma)

• from 6.5 m of section in a single unit

• group of beds-level stratigraphic resolution

Environment/lithology: "channel"; unlithified, pebbly, brown, green, argillaceous sandstone

• "broad fluvial channels incised through slightly older opaline sandstones... large, sandy, low-sinuosity stream with multiple channels and gravel bars"
• "Green and brown clay pebbles" within "unconsolidated, structureless and planar cross-stratified sands"

Size classes: macrofossils, mesofossils

Collection methods: bulk, sieve,

• "fossils were wet-screened"

Primary reference: R. M. Joeckel. 1988. A new late Miocene herpetofauna from Franklin County, Nebraska. Copeia 1988(3):787-789 [J. Alroy/M. Sommers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27481: authorized by John Alroy, entered by John Alroy on 06.12.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Actinopteri
 Acanthomorphata - Sciaenidae
Aplodinotus sp. Rafinesque 1818
 Siluriformes - Ictaluridae
Ictaluridae indet. Gill 1861 catfish
 Amiiformes - Amiidae
Amia sp. Linnaeus 1766 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. de Lacep├Ęde 1803 gar
Osteichthyes
 Salientia - Ranidae
Rana sp. Linnaeus 1758 frog
 Caudata - Urodela
"Ambystoma minshalli" = Amblystoma
"Ambystoma minshalli" = Amblystoma mole salamander
Reptilia
 Testudines - Trionychidae
Trionychidae indet.2 Gray 1825 softshell turtle
 Testudines - Pantestudinidae
Geochelone sp. Fitzinger 1835 turtle
 Squamata - Teiidae
Cnemidophorus sp. Wagler 1830 whiptail lizard
 Squamata - Boidae
Pterygoboa miocenica Holman 1976 sand boa
 Squamata - Colubridae
Salvadora paleolineata Holman 1973 colubrid snake
Paleoheterodon tiheni Holman 1964 colubrid snake
Thamnophis sp. Fitzinger 1843 garter snake
Nerodia sp. Baird and Girard 1853 water snake
 Squamata - Scincidae
Eumeces sp. Wiegmann 1834 skink
Mammalia
 Rodentia - Cricetidae
Copemys sp. Wood 1936 mouse
 Rodentia - Heteromyidae
Cupidinimus sp. Wood 1935 rodent
 Rodentia - Castoridae
Castoridae indet. Gray 1821 beaver
 Lagomorpha - Leporidae
Hypolagus sp. Dice 1917 rabbit
 Lipotyphla - Erinaceidae
Erinaceidae indet. Fischer von Waldheim 1817 hedgehog
 Lipotyphla - Talpidae
Talpidae indet. Fischer de Waldheim 1817 mole
Domninoides sp. Green 1956 mole
 Perissodactyla - Rhinocerotidae
Rhinocerotidae indet. Gray 1821 rhinoceros
 Perissodactyla - Equidae
Calippus sp. Matthew and Stirton 1930 horse
 Tribosphenida - Soricidae
Soricidae indet. Fischer 1814 shrew
 Carnivora - Amphicyonidae
Amphicyonidae indet. Haeckel 1886 bear-dog
 Carnivora - Canidae
Borophaginae indet.1 Simpson 1945 bone-crushing dog
Carpocyon sp. Webb 1969 bone-crushing dog
 Artiodactyla - Camelidae
Camelidae indet. Gray 1821 camel
two forms
 Artiodactyla - Leptomerycidae
Pseudoparablastomeryx sp. Frick 1937 ruminant
 Artiodactyla - Antilocapridae
Merycodontinae indet.1 Matthew 1904 pronghorn