†Microcallista (Costacallista) conradiana meganosensis Clark and Woodford 1927
Bivalvia - Cardiida - Veneridae
Alternative combination: Macrocallista meganosensis
Full reference: B. L. Clark and A. O. Woodford. 1927. The geology and paleontology of the type section of the Meganos Formation (lower Middle Eocene) of California. University of California Publications in Geological Sciences 17(2):63-142
Belongs to Microcallista (Costacallista) conradiana according to C. E. Weaver 1942
See also Clark and Woodford 1927
Sister taxa: none
Distribution:
• Eocene of United States (8: California collections)
Total: 8 collections each including a single occurrence