Lonerock Area ( of the United States)

Also known as JDNM-140, Lone Rock Site 50; JDNM 140, Campbell Ranch

Where: Gilliam County, Oregon (45.1° N, 119.9° W)

• Paleocoordinates: 49.6° N, 105.6° W (Wright 2013)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Kimberly Member (John Day Formation), Arikareean (29.5 - 18.5 Ma)

Environment/lithology: terrestrial; silty sandstone

Size classes: macrofossils, mesofossils

Collection methods: bulk, surface (float), surface (in situ), sieve

Primary reference: T. J. Fremd and D. P. Whistler. 2009. Preliminary description of a new microvertebrate assemblage from the Arikareean (early Miocene) John Day Formation, central Oregon. In L. B. Albright (ed.), Museum of Northern Arizona Bulletin 65:159-170 [N. Famoso/N. Famoso]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 212628: authorized by Nicholas Famoso, entered by Nicholas Famoso on 18.08.2020

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Tribosphenida - Herpetotheriidae
Herpetotherium merriami, Copedelphys "sp. new"
Herpetotherium merriami Stock and Furlong 1922 marsupial
Copedelphys "sp. new" Korth 1994 marsupial
 Tribosphenida - Erinaceidae
cf. Amphechinus sp.
cf. Amphechinus sp. Aymard 1850 hedgehog
 Soricomorpha - Talpidae
Scalopoides sp.
Scalopoides sp. Wilson 1960 mole
 Soricomorpha - Proscalopidae
Proscalops sp., Proscalops "sp. A", Proscalops "sp. new", Proscalops cf. secundus
Proscalops sp. Matthew 1901 placental
Proscalops "sp. A" Matthew 1901 placental
Proscalops "sp. new" Matthew 1901 placental
Proscalops cf. secundus Matthew 1909 placental
 Soricomorpha - Soricidae
Wilsonosorex cf. conulatus, cf. Domnina sp.
Wilsonosorex cf. conulatus Martin 1978 shrew
cf. Domnina sp. Cope 1873 shrew
 Carnivora - Palaeogalidae
Palaeogale dorothiae1
Palaeogale dorothiae1 Macdonald 1963 carnivoran
 Lagomorpha - Leporidae
cf. Archaeolagus sp., cf. Desmatolagus sp.
cf. Archaeolagus sp. Dice 1917 rabbit
cf. Desmatolagus sp. Matthew and Granger 1923 rabbit
 Rodentia - Sciuridae
Protosciurus sp., ? Protosciurus "sp. new", Protosciurus condoni, Protosciurus rachelae, Protosciurus mengi2, cf. Petauristodon sp., Petauristodon sp.2, Miosciurus ballovianus2
Protosciurus sp. Black 1963 squirrel
? Protosciurus "sp. new" Black 1963 squirrel
Protosciurus condoni Black 1963 squirrel
Protosciurus rachelae Black 1963 squirrel
Protosciurus mengi2 Black 1963 squirrel
cf. Petauristodon sp. Engesser 1979 squirrel
Petauristodon sp.2 Engesser 1979 squirrel
Miosciurus ballovianus2 Cope 1881 squirrel
 Rodentia - Aplodontidae
cf. Campestrallomys sp., Meniscomys spp.
cf. Campestrallomys sp. Korth 1989 mountain beaver
Meniscomys spp. Cope 1878 mountain beaver
 Rodentia - Eomyidae
cf. Arikareeomys "sp. new", cf. Apeomys sp., Apeomys whistleri n. sp.2, Leptodontomys "sp. new", Leptodontomys sp.2, Leptodontomys cf. douglassi
cf. Arikareeomys "sp. new" Korth 1992 rodent
cf. Apeomys sp. Fahlbusch 1968 rodent
Apeomys whistleri n. sp.2 Korth and Samuels 2015 rodent
Leptodontomys "sp. new" Shotwell 1956 rodent
Leptodontomys sp.2 Shotwell 1956 rodent
Leptodontomys cf. douglassi Burke 1934 rodent
 Rodentia - Heteromyidae
Proheteromys cf. sulcus, Proheteromys thorpei2, Proheteromys latidens2
Proheteromys thorpei2 Wood 1935 rodent
Proheteromys latidens2 Korth and Samuels 2015 rodent
 Rodentia - Castoridae
Capacikala sp.
Capacikala sp. Macdonald 1963 beaver
 Rodentia - Cricetidae
Leidymys cf. alicae, Leidymys nematodon, Leidymys lockingtonianus, Paciculus sp.
Leidymys cf. alicae Black 1961 rodent
Leidymys nematodon Cope 1879 rodent
Leidymys lockingtonianus Cope 1881 rodent
Paciculus sp. Cope 1879 rodent
 Rodentia - Zapodidae
Plesiosminthus fremdi n. sp.2, "Plesiosminthus clivosus" = Schaubeumys clivosus
Plesiosminthus fremdi n. sp.2 Korth and Samuels 2015 jumping mouse
"Plesiosminthus clivosus" = Schaubeumys clivosus Galbreath 1953 jumping mouse
 Rodentia - Entoptychidae
Entoptychus spp.
Entoptychus spp. Cope 1878 rodent
 Rodentia - Allomyidae
Alwoodia cf. magna
Alwoodia cf. magna Rensberger 1983 rodent
Reptilia
 Squamata - Loxocemidae
cf. Ogmophis sp.
cf. Ogmophis sp. Cope 1844 Mexican burrowing snake
 Squamata - Anguidae
Anguidae indet.
Anguidae indet. Gray 1825 squamates
Amphibia
 Caudata - Urodela
? Plethodontidae indet.
? Plethodontidae indet. Gray 1850 lungless salamander
1Famoso and Orcutt 2022; 2Korth and Samuels 2015