Bivalvia - Cyrtodontida - Cyrtodontidae

Alternative combination: Palaearca bulla

Full reference: J. W. Salter. 1866. Appendix on the fossils. The Geology of North Wales. Memoirs of the Geological Survey of Great Britain and of the Museum of Practical Geology 3:281-358

Belongs to Vanuxemia according to S.P. Tunnicliff 1987

Sister taxa: Vanuxemia decipiens, Vanuxemia inconstans, Vanuxemia odhneri, Vanuxemia waynesvillensis

Type specimen: BGS GSM 12397, a shell. Its type locality is Allt-Tair-ffynon Beds at Allt y Gadair, which is in a Longvillian marine mudstone in the United Kingdom.

Ecology: facultatively mobile semi-infaunal suspension feeder

Average measurements (in mm): valve 24.7 x 11.9