Family Halonymphidae Scarlato and Starobogatov 1983 (clam)
Bivalvia - Poromyida - Halonymphidae
Parent taxon: Cuspidarioidea according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Cuspidariidae, Protocuspidariidae, Spheniopsidae
Subtaxa: none
Ecology: facultatively mobile infaunal carnivore
Distribution: there are no occurrences of Halonymphidae in the database