Gastropoda - Trochoidea - Colloniidae
Full reference: J. P. Smith. 1927. Upper Triassic marine invertebrate faunas of North America. United States Geological Survey Professional Paper 141:1-262
Belongs to Collonia according to J. P. Smith 1927
Sister taxa: Collonia (Circulopsis), Collonia (Collonia), Collonia (Heniastoma), Collonia cincta, Collonia marginata, Collonia plicicostata, Collonia reflexa
Type specimen: Its type locality is Brock Mountain, 3 miles east of Madison's ranch (Trachyceras subzone), which is in a Tuvalian carbonate limestone in the Hosselkus Formation of California
Ecology: epifaunal grazer
Distribution:
• Triassic of United States (2: Alaska, California 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.