Utah Trilobites

See Also:

Trilobites from the United States across Paleozoic Time
The nine orders of Arthropod Class Trilobita
House Range
Trilobites of Canada

A small sample of the extensive diversity of trilobites from Utah

Cedaria minor Middle Cambrian Weeks Formation Millard County, Utah	Coosella Type I Family Crecicephalidae Middle Cambrian Weeks Formation Millard County, Utah	Pseudocybele nasuta Order Phacopida Family Pliomeridae Ordovician Fillmore Formation Millard County, Utah	Tricrepicephalus coria Middle Cambrian Weeks Formation Millard County, Utah

Selenocoryphe platyura Order Ptychopariida Middle Cambrian Weeks Formation Millard County, Utah	Ptychagnostus akanthodes Family: Ptychagnostidae Middle Cambrian Marjum Formation Millard County, Utah	Exceedingly Rare Gerospina schachti Order Ptychopariida Middle Cambrian Weeks Formation Millard County, Utah	Marjumia callas Order Ptychopariida Family Marjumiidae Middle Cambrian Marjum Formation Millard County, Utah

Nephalicephalus beebei Order Ptychopariida Family Menomoniidae Middle Cambrian Weeks Formation Millard County, Utah	Altiocculus harrisi, formerly: Alokistocare harrisi Middle Cambrian Wheeler Formation Millard County, Utah	Weeksina unispina Order Ptychopariida Middle Cambrian Weeks Formation Millard County, Utah	Dorypyge swasii Order Corynexochida Middle Cambrian Pierson Cove Formation Millard County, Utah

Peronopsis interstricta Order Agnostida Family Peronopsidae Middle Cambrian Wheeler Formation Millard County, Utah	Baltagnostus eurypyx Order Agnostida Family Diplagnostidae Middle Cambrian Wheeler Formation Millard County, Utah	Zacanthoides grabaui Order Corynexochida Family Zacanthoididae Middle Cambrian Spence Sahle Box Elder County, Utah	Altiocculus drumensis Order Ptychopariida Family Alokistocaridae Middle Cambrian Marjum Formation Millard County, Utah

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