†Dendraster vizcainoensis similaris Grant and Hertlein 1938 (sand dollar)
Echinoidea - Clypeasteroida - Dendrasteridae
Full reference: U. S. Grant and L. G. Hertlein. 1938. The West American Cenozoic Echinoidea. Publications of the University of California at Los Angeles in Mathematical and Physical Sciences 2:1-225
Belongs to Dendraster vizcainoensis according to U. S. Grant and L. G. Hertlein 1938
Sister taxa: none
Type specimen: Its type locality is Signal Hill (or Los Cerritos), which is in a Pleistocene marine horizon in the San Pedro Formation of California
Ecology: slow-moving semi-infaunal detritivore
Distribution:
• Quaternary of United States (2: California collections)
Total: 2 collections each including a single occurrence