Bolaspidella drumensis Robison, 1964

Name: Bolaspidella drumensis Robison, 1964

Locality: Millard Co., Utah
Stratigraphy: left: Pierson Cove Fm., Middle Cambrian; right: Marjum? Fm., Mid. Cam.
Remarks: left Photo: Andrew Milner; right Photo: Trilobites at Fossil Mall

Size: right specimen: 11 mm

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.