JDNM-8 Sheep Rock ( of the United States)

Where: Grant County, Oregon (44.5° N, 119.6° W: paleocoordinates 44.2° N, 110.7° W)

• coordinate based on unpublished field data

• local area-level geographic resolution

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

• Includes Turtle Cove though Kimberly members.

Environment/lithology: terrestrial; claystone

Size classes: macrofossils, mesofossils

Primary reference: W. W. Korth and J. L. Cavin. 2016. New material of the marsupial (Mammalia, Metatheria) Herpetotherium merriami (Stock and Furlong, 1922) from the John Day Formation, late Oligocene, Oregon, USA. Journal of Paleontology 90(6):1225-1232 [N. Famoso/N. Famoso]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 212629: authorized by Nicholas Famoso, entered by Nicholas Famoso on 18.08.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Tribosphenida - Herpetotheriidae
Herpetotherium merriami
Herpetotherium merriami Stock and Furlong 1922 marsupial
 Primates - Ekgmowechashalidae
Ekgmowechashala zancanellai4
Ekgmowechashala zancanellai4 Samuels et al. 2015 primate
 Rodentia - Heteromyidae
Proheteromys thorpei2
Proheteromys thorpei2 Wood 1935 rodent
 Rodentia - Castoridae
"Palaeocastor fossor" = Fossorcastor fossor2, Capacikala gradatus1, Palaeocastor peninsulatus1, Microtheriomys brevirhinus n. gen. n. sp.2
"Palaeocastor fossor" = Fossorcastor fossor2 Peterson 1905 beaver
Capacikala gradatus1 Cope 1878 beaver
Palaeocastor peninsulatus1 Cope 1881 beaver
Microtheriomys brevirhinus n. gen. n. sp.2 Korth and Samuels 2015 beaver
 Rodentia - Sciuridae
Protosciurus mengi2, Protosciurus rachelae2
Protosciurus mengi2 Black 1963 squirrel
Protosciurus rachelae2 Black 1963 squirrel
Insecta
  - Entomoolithidae
Curvellipsoentomoolithus laddi3
Curvellipsoentomoolithus laddi3 Lee et al. 2024 grasshopper eggs
1Calede et al. 2019; 2Korth and Samuels 2015; 3Lee et al. 2024; 4Samuels et al. 2015