Ptychagnostus atavus

Trilobites Order Agnostida Suborder Agnostina, Superfamily Agnostoidea, Family Ptychagnostidae
Geologic Age: Middle Cambrian
Trilobites are 3 to 6 mm
Lower Wheeler Formation, Millard County, Utah

Also see: American Trilobites

 

 

 

 

 Ptychagnostus atavus Agnostid Trilobites from Wheeler Formation of Utah