Parent taxon: Pterioida according to E. V. Coan et al. 2000
See also Anelli et al. 2006
Sister taxa: Amuropecten, Annulinectes, Anthracoptera polita, Arzelella, Bakevellidae, Barehamia, Canadotis, Capedopecten, Cleidochondrella, Colpentolium, Cornutoentolium, Costentolium, Cussetostrea, Echinopecten, Entomonotis, Euthymipecten, Fibrosopecten, Freneixita, Freneixostrea, Fylgia, Gervilleiogoma, Gervilletia, Gondwanella, Grabella, Gryphaeligmus, Ignara, Indonectes, Intodesma, Jeletzkiella, Kabyaipecten, Kobayshites, Konbostrea, Lamellotacea, Lentilla, Lithioperna, Loemmelella, Lywcea, Minervapecten, Moussonella, Mysidoptera, Neitheops, Neoentolium, Notochlamy, Novaculaperma, Opiotoptera, Pacimonotis, Periclaria, Pichlerella, Platygena, Pomiropecten, Praeaucellina, Praebuchia, Praesondylopecten, Proostrea, Prospondylidea, Pseudogyra, Pseudovola, Pteriina, Pterinoactinodesma, Pterioidina, Raricardium, Rhyssomytiloides, Scythemtolium, Soleniscostrea, Sorngyaceramus, Spia, Stappyersella, Tarturia, Titaonpecten, Trematiconcha, Unica, Uralopteria, Vertinomia, Xenium
Subtaxa: none
Ecology: stationary low-level epifaunal suspension feeder
Distribution: there are no occurrences of Pinnina in the database