Sunrise Formation

The Sunrise Formation is a geologic formation in Nevada. It preserves fossils dating back to the Hettangian to Sinemurian stages of the Early Jurassic period.^[1]

Sunrise Formation
Stratigraphic range: Hettangian-Sinemurian ~201–191 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Sub-units	Ferguson Hill & New York Canyon members
Overlies	Gabbs Formation
Lithology
Primary	Limestone
Other	Shale, siltstone, sandstone
Location
Coordinates	38.5°N 118.1°W / 38.5; -118.1
Approximate paleocoordinates	19.5°N 56.2°W / 19.5; -56.2
Region	Nevada
Country	United States
Extent	Gabbs Valley Range
Sunrise Formation (the United States) Show map of the United States Sunrise Formation (Nevada) Show map of Nevada

Fossil content

Among others, the following fossils have been reported from the formation:

Ammonites

• Alsatites proaries^[2]
• Arnioceras ritterbushi^[3]
• A. sparsum^[3]
• Coroniceras involutum^[4]
• C. luningense^[4]
• Guexiceras profundus^[4]
• Tipperoceras mullerense^[4]
• Tmaegoceras nudaries^[4]

Bivalves

• Agerchlamys boellingi^[5]
• Jaworskiella siemonmulleri^[6]
• Trigonia aff. hemisphaerica^[6]
• Vaugonia cf. vancouverensis^[6]
• Frenguelliella sp.^[6]

Echinoids

• Plesiechinus hawkinsi

See also

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