†Harpidium (Isovella) Breyvel and Breyvel 1970 (lamp shell)
Rhynchonellata - Pentamerida - Pentameridae
Alternative spelling: Isovella
Synonym: Apopentamerus
Parent taxon: Harpidium according to A. Williams et al. 2002
See also Sepkoski 2002
Sister taxa: Harpidium (Harpidium), Harpidium (Sulcipentamerus)
Subtaxa: none
Ecology: stationary epifaunal suspension feeder
Distribution: