†Anorthoscutum oregonensis major Kew 1920 (sand dollar)
Echinoidea - Clypeasteroida - Dendrasteridae
Alternative combination: Dendraster (Calaster) oregonensis major
Full reference: W. S. W. Kew. 1920. Cretaceous And Cenozoic Echinoidea of the Pacific coast of North America. University Of California Publications Bulletin of the Department of Geology 23-236
Belongs to Anorthoscutum oregonensis according to U. S. Grant and L. G. Hertlein 1938
Sister taxa: Anorthoscutum oregonense quaylet, Anorthoscutum oregonensis quaylei, Dendraster (Calaster) oregonensis gibbosus
Type specimen: UCMP 11044 and 11352 (cotypes)
Ecology: slow-moving semi-infaunal detritivore
Distribution: there are no occurrences of Anorthoscutum oregonensis major in the database