†family Megadesmatidae Fischer 1887 (clam)
Bivalvia - Pholadida - Megadesmatidae
Parent taxon: Myacea according to N. D. Newell 1965
Sister taxa: Corbulidae, Myacidae, Myidae, Pleurodesmatidae, Raetomyidae, Rhaetomyidae
Subtaxa: none
Ecology: facultatively mobile infaunal suspension feeder
Distribution: there are no occurrences of Megadesmatidae in the database