Bolaspis labrosa
Crusoia cebes

Glyphaspis capella

Kootenia sp.

Olenoides nevadensis
Tonkinella stephensis

Zacanthoides sp. 2





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



Additional References on trilobites in Montana:


Walcott, Charles D.; 1917, Cambrian Geology and Paleontology IV, No.2 The Albertella Fauna in British Columbia and Montana. Smith.Misc.Coll. Vol.67, No.2

Lochman, Christina & Donald Duncan, 1944, Early Upper Cambrian Faunas of Central Montana. Geological Society of America, Special Papers No.54

Lochman,Christina; 1950, Upper Cambrian Faunas of the Little Rocky Mountains, Montana. Journal of Paleontology 24(3):322-349

Lochman,Christina & Duncan, Donald; 1950, The Lower Ordovician Bellefontia Fauna in Central Montana. Journal of Paleontology 24(3):350-353

Lochman, Christina & Hu, Chung-Hung, 1962, An Aphelaspis Zone Faunule From Logan, Montana. Journal of Paleontology 36(3):431-441

Lochman, Christina, 1964, Upper Cambrian Faunas From the Subsurface Deadwood Formation, Williston Basin, Montana. Journal of Paleontology 38(1):33-60

Grant, Richard E., 1965, Faunas and Stratigraphy of the Snowy Range Formation (Upper Cambrian) in Southwestern Montana and Northwestern Wyoming. Geological Society of America, Memoir 96

Lochman, Christina, 1966, Lower Ordovician (Arenig) Faunas From the Williston Basin, Montana and North Dakota. Journal of Paleontology 40(3):512-548

Chung-Jung Hu, 1972, Ontogeny of Three Cedaria Zone Trilobites from Upper Cambrian, Montana. Trans. Proc. Palaeont. Soc. Japan V.85:245-259



*researched and compiled by Kevin D. Brett and George Ast

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