List
of Trilobite Formations Sorted by
Geological
Time:
CAMBRIAN:
Addy
Quartzite (WA)
Brigham
Quartzite (UT)
Bright
Angel Shale (NV, AZ)
Burgess
Shale Formation (B.C.)
Cadiz
Formation (CA)
Campito
Formation (CA, NV)
Carrara
Formation (CA)
Cathedral
Formation (Alberta, B. C.)
Chambless
Limestone (CA)
Chisholm
Shale (NV, UT)
Damnation
Limestone (Mont.)
Dome
Limestone (UT)
Dunderberg
Shale (NV)
Eager Formation (B.C.)
Emigrant
Formation (NV)
Gordon
Shale (Mont.)
Glossopleura
Biozone (WA)
Harkless
Formation (CA, NV)
Langston
Formation (Lead Bell Shale Member, Spence Shale Tongue) (UT)
Latham
Shale (CA)
Lead
Bell Shale Member (Idaho) (see Spence Shale)
Marjum
Formation (UT)
Metaline
Limestone (WA)
McKay
Group (B.C.)
Monola
Formation (CA)
Mount Whyte
Formation (B.C., Alberta)
Mule
Spring Limestone (CA, NV)
Mural
Formation (Alberta, B.C.)
Naiset Formation
(Alberta, B.C.)
Naomi
Peak Limestone (UT)
Pagoda
Limestone (Mont.)
Peerless
Formation (Colorado)
Pentagon
Shale (Mont.)
Peyto Formation
(Alberta, B.C.)
Pierson
Cove Formation (UT)
Pika
Formation (Alberta, B.C.)
Pioche
Shale (NV)
Poleta
Formation (CA, NV)
Ptarmigan
Formation (Alberta, B. C.)
Ross
Lake Shale Member (Alberta, B. C.)
Saline
Valley Formation (CA, NV)
Spence
Shale (UT, Idaho)
Steamboat
Limestone (Mont.)
Stephen
Formation (Alberta, B. C.)
Survey
Peak Formation (Alberta)
Swazey
Limestone (UT)
Takakkaw
Tongue Formation (B.C.)
Twin
Knobs Formation (Idaho)
Ute
Limestone (UT)
Weeks
Formation (UT)
Wheeler
Shale (UT)
Whirlwind
Formation (UT)
White-Inyo
Mountains Biozones (CA)
Wolsey
Shale (Mont.)
Wood
Canyon Formation (CA)
Zabriskie
Quartzite (CA)
ORDOVICIAN:
Antelope
Valley Limestone (NV)
Filmore
Formation (UT)
Garden
City Formation (UT, Idaho)
Manitou
Formation (Colorado
Ninemile
Shale (NV)
Outram
Formation (Alberta)
Pogonip
Group (UT, CA)
Skoki
Formation (Alberta)
Survey
Peak Formation (Alberta)
Swan
Peak Formation (UT, Idaho)
Wah
Wah Formation (UT)
SILURIAN:
Gazelle
Formation (CA)
Tegert
Formation (B.C.)
DEVONIAN:
Chaffee
Formation, Dyer Dolomite Member (Colorado)
Kennett
Formation (CA)
Williams
Canyon Formation (Colorado)
MISSISSIPPIAN:
Baird
Formation (CA)
Caballero
Formation (N.M.)
Lake
Valley Formation (Dona Ana, Arcente, Tierra Blanca, Nunn, Alamogordo,
and Andrecito Members) (N.M.)
Kelly
Formation (N.M.)
Ouray
Limestone (Colorado)
Williams
Canyon Formation (Colorado)
PENNSYLVANIAN:
Beldon
Formation (Colorado)
Glen
Eerie Formation (Colorado)
Hermosa
Formation (Colorado)
Maroon
Formation (Colorado)
Minturn
Formation (Colorado)
Mount Mark
Formation (B. C.)
Weber
Formation (Colorado)
PERMIAN:
San
Andreas Formation (N.M.)
Plea:
Many of the faunal lists for
these formations are incomplete or may have outdated generic assessments.
Please point out any errors in synonomy or generic designations,
as well as any additions or corrections to the faunal lists. This
is a growing site and we look forward to any contributions of
faunal lists or trilobite photos.
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