Subfamily Asthenothaerinae Fischer 1887 (clam)
Bivalvia - Thraciida - Thraciidae
Parent taxon: Thraciidae according to P. Bouchet et al. 2010
Sister taxa: Bushia, Corymya, Parvithracia, Phragmorisma, Thracia, Thracidentula, Thracidora, Thraciopsis
Subtaxa: Asthenothaerus
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at NMB Loc. 17512 - Quebrada Mare Abajo [Mare Fm] (Pliocene of Venezuela)