List
of Trilobite Locations Sorted by
U.S. State or Canadian Province:
Alberta
Trilobite Locations:
Cathedral
Formation
Mount Whyte
Formation
Mural
Formation
Naiset Formation
Outram
Formation
Peyto Formation
Pika
Formation
Ptarmigan
Formation
Ross
Lake Shale Member
Skoki
Formation
Stephen
Formation
Survey
Peak Formation
Arizona Trilobite Locations:
Bright
Angel Shale
British
Columbia Trilobite Locations:
Burgess
Shale Formation
Cathedral
Formation
Eager Formation
McKay
Group
Mount Mark
Formation
Mount Whyte
Formation
Mural
Formation
Naiset Formation
Peyto Formation
Pika
Formation
Ptarmigan
Formation
Ross
Lake Shale Member
Stephen
Formation
Takakkaw
Tongue Formation
Tegert
Formation
California
Trilobite Locations:
Baird
Formation
Cadiz
Formation
Campito
Formation
Carrara
Formation
Chambless
Limestone
Gazelle
Formation
Harkless
Formation
Kennett
Formation
Latham
Shale
Monola
Formation
Mule
Spring Limestone
Pogonip
Formation
Poleta
Formation
Saline
Valley Formation
White-Inyo
Mountains Biozones
Wood
Canyon Formation
Zabriskie
Quartzite
Colorado
Trilobite Locations:
Beldon
Formation (Pennsylvanian)
Chaffee
Formation, Dyer Dolomite Member ( Devonian)
Glen
Eerie Formation (Lower Pennsylvanian)
Hermosa
Formation (Pennsylvanian)
Manitou
Formation (Low. Ordovician)
Maroon
Formation (Pennsylvanian)
Minturn
Formation (Pennsylvanian)
Ouray
Limestone (Mississippian)
Peerless
Formation (Upp. Cambrian)
Weber
Formation (Pennsylvanian)
Williams Canyon Formation (Upp.
Dev. / Low. Miss.)
Idaho
Trilobite Locations:
Garden
City Formation
Lead
Bell Shale Member (see Spence Shale)
Spence
Shale
Swan
Peak Formation
Twin
Knobs Formation
Montana
Trilobite Locations:
Damnation
Limestone
Gordon
Shale
Pagoda
Limestone
Pentagon
Shale
Steamboat
Limestone
Wolsey
Shale
Nevada
Trilobite Locations:
Antelope
Valley Limestone
Bright
Angel Shale
Campito
Formation
Chisholm
Shale
Dunderberg
Shale
Emigrant
Formation
Harkless
Formation
Mule
Spring Limestone
Ninemile
Shale
Pioche
Shale
Poleta
Formation
Saline
Valley Formation
New
Mexico Trilobite Locations:
Caballero
Formation (lower Mississippian)
Lake
Valley Formation (Dona Ana, Arcente, Tierra Blanca, Nunn, Alamogordo,
and Andrecito Members) (lower Mississippian)
Kelly
Formation (Mississippian)
San
Andreas Formation (Permian)
Oklahoma
Trilobite Locations:
Bois
d'Arc Formation,
Cravatt Member (Lower Devonian)
Bois
d'Arc Formation, Fittstown Member (Lower
Devonian)
Frisco
Formation (Lower Devonian)
Haragan
Formation (Lower Devonian)
Henryhouse
Formation - (Silurian)
Utah
Trilobite Locations:
Brigham
Quartzite
Chisholm
Shale
Dome
Limestone
Filmore
Formation
Garden
City Formation
Langston
Formation (Lead Bell Shale Member, Spence Shale Tongue)
Lead
Bell Shale Member (see Spence Shale)
Marjum
Formation
Naomi
Peak Limestone
Pierson
Cove Formation
Pogonip
Group
Spence
Shale
Swan
Peak Formation
Swazey
Limestone
Ute
Limestone
Wah
Wah Formation
Weeks
Formation
Wheeler
Shale
Whirlwind
Formation
Washington
Trilobite Locations:
Addy
Quartzite
Glossopleura
Biozone
Metaline
Limestone
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