†family Pachyrismatidae Scarlato and Starobogatov 1979 (clam)
Bivalvia - Megalodontida - Pachyrismatidae
Parent taxon: Megalodontoidea according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Ceratomyopsidae, Dicerocardiidae, Gemmelarodus, Megalodontidae, Wallowaconchidae
Subtaxa: none
Ecology: stationary semi-infaunal suspension feeder
Distribution: there are no occurrences of Pachyrismatidae in the database