Name: Ptychagnostus
atavus
Order Agnostida, Suborder Agnostina,
Superfamily
Agnostoidea, Family Ptychagnostida
Locality: near Modecia Flats, House Range, Millard Co., Utah
Stratigraphy: Lower Wheeler Formation,
Middle
Cambrian
Remarks: Photo:
courtesy Virtual
Fossil Museum Trilobites
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Western
Trilobites Association:
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