Alternative combinations: Clypeaster geometricus, Pygurus geometricus
See also Clark and Twitchell 1915
Ecology: slow-moving semi-infaunal detritivore
• Cretaceous of United States (2: Delaware 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.