Usage:
Seven Devils Group (ID*,OR*)
Subunits:
(alphabetical) --all in ID,OR: Doyle Creek Formation*, Hunsaker Creek Formation*, Martin Ridge Formation or Martin Bridge Limestone, Pittsburg Formation, Wild Sheep Creek Formation*, Windy Ridge Formation*.
Geologic age:
Permian, Early(?)*
Permian, Early*
Leonardian*
Guadalupian*
Triassic, Middle*
Ladinian*
Triassic, Late*
Karnian*
Type section, locality, area and/or origin of name:
Not synopsized to date.
AAPG geologic province:
Eastern Columbia basin*
Snake River basin*
Idaho Mountains province*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).