Northwestern Montana
Pentagon Shale - Two localities: Pentagon Mountain and Lick Creek-Continental Divide - Deiss 1936
Trilobites:
Agnostus brevispinus
Agnostus robustus
Bathyuriscus haydeni Meek, 1873[=
Bathyuriscus formosis Deiss, 1939 (fida Robison, 1964)]
Ehmaniella concava (formerly
Clappaspis concava)
Ehmaniella convexa (formerly Clappaspis convexa)
Ehmaniella hebetis (formerly Clappaspis hebetis)
Ehmaniella lickensis (formerly Clappaspis lickensis)
Ehmaniella mcnairi (formerly Clappaspis mcnairi)
Ehmaniella obscura (formerly Clappaspis obscura)
Ehmaniella ornatus (formerly
Anomalocephalus ornatus)
Ehmaniella papulata (formerly Clappaspis papulata)
Ehmaniella singularis (formerly Clappaspis singularis)
Ehmaniella striata (formerly Clappaspis striata)
Ehmaniella typica (formerly Clappaspis typica)
Ehmania convexa
Ehmania elongata
Ehmania exilis
Ehmania incerta
Ehmania perfecta
Ehmania sulcata
Ehmania unispinata
Elrathiella convexa
Elrathiella crassiorata
Elrathiella manifesta
Elrathiella nitida
Elrathiella plana
Elrathiella recta
Elrathiella sulcata
Elrathiella tenuis
Elrathiella unisulcata
Elrathiella valens
Kootenia pariquadriceps
Kootenia serrata
Kootenia subequalis
Parehmania arcuata
Parehmania concava
Parehmania cylindrica (formerly Rowia cylindrica)
Parehmania delicata (formerly Rowia delicata)
Parehmania granulata (formerly
Rowia granulata)
Parehmania princeps
Parehmania quadrata
Parehmania storeyi
Parehmania vulgata(formerly Rowia vulgata)
Ptychoparella
convexa (formerly
Elrathina convexa)
Ptychoparella fecunda (formerly Elrathina fecunda)
Ptychoparella oculineata (formerly Elrathina oculineata)
REFERENCES:
Deiss,Charles (1939) Cambrian Stratigraphy and Trilobites of Northwestern Montana. The Geological Society of America, Special Papers, Number 18
Resser, C.E. (1935) Nomenclature of some Cambrian Trilobites, Smithsonian, Misc. Coll.., Vol. 93, No. 5, P. 1-46
* Researched and Compiled by George Ast
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