Echinoidea - Clypeasteroida - Protoscutellidae
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 Periarchus according to W. B. Clark and M. W. Twitchell 1915
See also Cooke 1942
Sister taxa: Periarchus altus, Periarchus kewi, Periarchus lyelli, Periarchus pileussinensis, Periarchus quinquefarius, Periarchus rutriformis
Type specimen: Its type locality is Shubuta Creek, which is in an Eocene marginal marine horizon in Mississippi
Ecology: slow-moving semi-infaunal detritivore
Distribution:
• Eocene of United States (2: Alabama, Mississippi collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.