# Sheep Pass Formation > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Sheep_Pass_Formation > Markdown URL: https://mediated.wiki/source/Sheep_Pass_Formation.md > Source: https://en.wikipedia.org/wiki/Sheep_Pass_Formation > Source revision: 1315779840 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) The **Sheep Pass Formation** is a [geologic formation](/source/Formation_(geology)) in [Nevada](/source/Nevada). It preserves [fossils](/source/Fossils) dating back to the [Paleogene](/source/Paleogene) [period](/source/Period_(geology)). ## Fossil content ### Vertebrates Mammals Genus Species Presence Material Notes Images Apatemys A. bellus Near Ely, Nevada.[1] An apatothere. Elymys E. complexus Near Ely, Nevada.[2] A rodent, possibly of the family Zapodidae. Ischyromyidae Near Ely, Nevada.[2] Knightomys Near Ely, Nevada.[2] A rodent represented by material not assignable to species.[2] Mattimys Near Ely, Nevada.[2] A rodent represented by material not assignable to species.[2] Microparamys M. sambucus Near Ely, Nevada.[2] A rodent. Notharctus N. tenebrosus Near Ely, Nevada.[1] Upper and lower jaws.[3] A primate. Nyctitheriidae Near Ely, Nevada.[1] At least one nyctitheriid present. Palaeochiropteryx P. sambuceus "Elderberry Canyon Quarry in the Egan Range near Ely, White Pine County".[4] Partial skeleton (USNM PAL 417350) and left dentary (USNM PAL 706598).[4] A palaeochiropterygid bat. Pantolestes P. longicaudus Near Ely, Nevada.[1] A pantolestid. Pauromys P. exallos Near Ely, Nevada.[2] A rodent. Reithroparamys R. delicatissimus Near Ely, Nevada.[2] A rodent. cf. R. huerfanensis Near Ely, Nevada.[2] A rodent. Sciuravus S. sp. Near Ely, Nevada.[2] A rodent represented by material not assignable to species.[2] Sonor S. handae "Elderberry Canyon Quarry in the Egan Range near Ely, White Pine County".[4] Left dentary (USNM PAL 544091).[4] A vespertilionid bat. cf. Tetrapassalus cf. T. mckennai Near Ely, Nevada.[1] An epoicotheriid. Trogolemur T. myodes Near Ely, Nevada.[1] An anaptomorphine primate. Volactrix V. simmonsae "Elderberry Canyon Quarry in the Egan Range near Ely, White Pine County".[4] Right and left dentaries.[4] An onychonycterid bat. Amphibians Genus Species Presence Material Notes Images Eorubeta E. nevadensis Member C (south Egan Range).[5][6] A frog. Palaeobatrachus P. occidentalis Member B.[6] A frog. ### Invertebrates Crustaceans Genus Species Presence Material Notes Images Clinocypris? C.? sp. Member B.[5] An ostracod. Cypridea C. bicostata Member B.[5] An ostracod. Paracypridopsis? P.? sp. Member B.[5] An ostracod. Molluscs Genus Species Presence Material Notes Images Hydrobia Member B.[5] A snail. Valvata Member B.[5] A snail. ## See also - [List of fossiliferous stratigraphic units in Nevada](/source/List_of_fossiliferous_stratigraphic_units_in_Nevada) - [Nevadaplano](/source/Nevadaplano) - [Paleontology in Nevada](/source/Paleontology_in_Nevada) ## References 1. Emry, Robert J. (1990-01-01). ["Mammals of the Bridgerian (middle Eocene) Elderberry Canyon Local Fauna of eastern Nevada"](https://pubs.geoscienceworld.org/gsa/books/book/378/chapter/3797114/Mammals-of-the-Bridgerian-middle-Eocene-Elderberry). *Dawn of the Age of Mammals in the northern part of the Rocky Mountain Interior, North America*. Vol. 243. Geological Society of America Special Papers. pp. 187–210. [doi:10.1130/SPE243-p187](https://doi.org/10.1130/SPE243-p187). ISBN 0-8137-2243-8. 1. Emry, Robert J. & Korth, William W. (1989). "Rodents of the Bridgerian (Middle Eocene) Elderberry Canyon Local Fauna of Eastern Nevada". *Smithsonian Contributions to Paleobiology*. '***(67): 1–14. [doi:10.5479/si.00810266.67.1](https://doi.org/10.5479/si.00810266.67.1). [ISSN 0081-0266](https://www.worldcat.org/issn/0081-0266)*** 1. Perry, Jonathan M. G.; Gunnell, Gregg F.; Emry, Robert J. (2017-07-04). "New cranial material of Notharctus (Mammalia, Primates, Notharctidae) from the Sheep Pass Formation, Elderberry Canyon, Nevada, with implications for incisor morphology and paleogeography of notharctine primates". *Journal of Vertebrate Paleontology*. **37** (4). [Bibcode:2017JVPal..37E1914P](https://ui.adsabs.harvard.edu/abs/2017JVPal..37E1914P). [doi:10.1080/02724634.2017.1331914](https://doi.org/10.1080/02724634.2017.1331914). [ISSN 0272-4634](https://www.worldcat.org/issn/0272-4634). [S2CID 133982802](https://api.semanticscholar.org/CorpusID:133982802) 1. Czaplewski, Nicholas J.; Morgan, Gary S.; Emry, Robert J.; Gignac, Paul M.; O'Brien, Haley D. (2022-05-25). ["Three New Early Middle Eocene Bats (Mammalia: Chiroptera) from Elderberry Canyon, Nevada, USA"](https://www.researchgate.net/publication/360886645). *Smithsonian Contributions to Paleobiology*. '***(106): 2–25. [doi:10.5479/si.19874677](https://doi.org/10.5479/si.19874677). [ISSN 1943-6688](https://www.worldcat.org/issn/1943-6688). [S2CID 249114343](https://api.semanticscholar.org/CorpusID:249114343)*** 1. Bonde, Joshua W.; Druschke, Peter A.; Hilton, Richard P.; Henrici, Amy C.; Rowland, Stephen M. (2020). ["Preservation of latest Cretaceous (Maastrichtian)-Paleocene frogs (Eorubeta nevadensis) of the Sheep Pass Formation of east-central Nevada and implications for paleogeography of the Nevadaplano"](https://www.researchgate.net/publication/342663799). *PeerJ*. **8**. [doi:10.7717/peerj.9455](https://doi.org/10.7717/peerj.9455). [ISSN 2167-8359](https://www.worldcat.org/issn/2167-8359). [PMC 7341540](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7341540). [PMID 32704447](https://pubmed.ncbi.nlm.nih.gov/32704447) 1. ["Abstract: TWO DISTINCT FROG DEATH ASSEMBLAGES FROM THE SHEEP PASS FORMATION (MAASTRICHTIAN-EOCENE), EAST-CENTRAL NEVADA (2009 Portland GSA Annual Meeting (18-21 October 2009))"](https://gsa.confex.com/gsa/2009AM/webprogram/Paper160933.html). *gsa.confex.com*. Retrieved 2022-09-01. - ((Various Contributors to the Paleobiology Database)). ["Fossilworks: Gateway to the Paleobiology Database"](https://www.fossilworks.org). Retrieved 17 December 2021. --- Adapted from the Wikipedia article [Sheep Pass Formation](https://en.wikipedia.org/wiki/Sheep_Pass_Formation) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Sheep_Pass_Formation?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). 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