†family Hypagnostoidae Ivshin 1953 (artiopod)
Artiopoda - Agnostida - Hypagnostoidae
Parent taxon: Agnostoidea according to M. G. Pour and L. E. Popov 2009
Sister taxon: Peronopsidae
Subtaxa: none
Ecology: nektonic suspension feeder
Distribution: there are no occurrences of Hypagnostoidae in the database