Name: Bolaspidella drumensis
Trilobite Order Ptychopariida,
Family Menomoniidae
Age: Middle Cambrian
Locality: Drum Mountains, Pierson
Cove Formation, Millard County, Utah
Size: 10 mm
Credits: Fossil Mall
Note: As
far as we know Bolaspidella drumensis has never been reported from
the Marjum Formation of the House Range and only occurs in the Drum
Mountains where it is found in both the Pierson Cove and the Wheeler
Formations. There is much debate on where the boundary between the
Piersons Cove and the Wheeler formation actually is.
