Echinoidea - Clypeasteroida - Echinarachniidae
Synonym: Astrodapsis major Kew 1920
Full reference: W. B. Clark and M. W. Twitchell. 1915. The Mesozoic and Cenozoic Echinodermata of the United States. United States Geological Survey Bulletin 54:1-341
Belongs to Astrodapsis according to C. A. Hall 1962
See also Clark and Twitchell 1915, Grant and Hertlein 1938 and Kew 1920
Sister taxa: Astrodapsis antiselli, Astrodapsis brewerianus, Astrodapsis cierboensis, Astrodapsis davisi, Astrodapsis depressus, Astrodapsis diabloensis, Astrodapsis fernandoensis, Astrodapsis fresnoensis, Astrodapsis israelskyi, Astrodapsis jacalitosensis, Astrodapsis kewi, Astrodapsis pabloensis, Astrodapsis peltoides, Astrodapsis spatiosus, Astrodapsis whitneyi
Subtaxa: Astrodapsis arnoldi arnoldi Astrodapsis arnoldi crassus Astrodapsis arnoldi fresnoensis
Ecology: slow-moving semi-infaunal detritivore
Distribution:
• Pliocene of United States (1: California collection)
• Miocene of United States (6: California)
Total: 7 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.