Name: Amecephalus idahoense (Resser, 1939)
Order Ptychopariida, Superfamily Ptychoparioidea, Family Alokistocaridae
Locality: left: Hansen Canyon, Wellsville Mountains, Utah; middle:
Liberty, Idaho; right: Miner's Hollow, Wellsville Mts., Utah
Stratigraphy: Spence Shale, Langston
Formation, Middle Cambrian
Remarks: left: photographed by Kevin Brett; middle: Photo:
G. Ast Collection; right: photo: N. Skabelund
Name: Amecephalus idahoense (Resser, 1939)
Order Ptychopariida, Superfamily Ptychoparioidea, Family Alokistocaridae
Locality: High Creek Canyon, Utah
Stratigraphy: Spence Shale, Middle Cambrian
Remarks: Prepared and photographed by Dave Comfort
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