Sheep Pass Formation

The Sheep Pass Formation is a geologic formation in Nevada. It preserves fossils dating back to the Paleogene period.

Sheep Pass Formation
Stratigraphic range: Latest Cretaceous to Paleogene
Type	Geological formation
Sub-units	6 members (A to F)
Location
Region	Nevada
Country	United States

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

• Earth sciences portal
• United States portal
• Paleontology portal

• List of fossiliferous stratigraphic units in Nevada
• Nevadaplano
• Paleontology in Nevada