H. inaequivalvis

Acobaecardium, Ahtioconcha, Allobuchia, Alnifia, Altaipecten, Amphijanira, Amuropecten, Anderkenia, Annulinectes, Anshunopecten, Antijanira, Antipecten, Arcticeramus, Arctomyalina, Arzelella, Augea, Avichlamys, Avicularca, Aviculoperna, Aviculovulsa, Bakevelloides, Barbosaia, Barehamia, Bittneria, Boiomytilus, Bouleigmus, Burckhardtia, Calvaentolium, Cameleolopha, Canadotis, Capedopecten, Carinonychia, Chalmasia, Cheiopteria, Cleidochondrella, Cliopteria, Cochlearites, Colpentolium, Corallospondylus, Cornutoentolium, Costeina, Costentolium, Costicamptonectes, Crenamussium, Cteniopleurium, Cussetostrea, Darteplicatula, Datta, Diotis, Dipleurites, Dolichopteron, Dolponella, Dorcadungula, Echinopecten, Enkelbergia, Ensipteria, Entoliopsis, Entomonotis, Euptera, Euthymipecten, Exputens, Fascinewellipecten, Fergania, Fibrosopecten, Follmannia, Fractoceramus, Freneixita, Freneixostrea, Fylgia, Gerlus, Gervilleiogoma, Gervilletia, Glendella, Gondwanella, Grabella, Gryphaeligmus, Haenleinia, Hayasakapecten, Heligmina, Heligmopsis, Heterostrea, Hoernesiella, Hokonuia (syn. Nuggetia), Hypotrema, Hypoxytoma, Ignara, Indonectes, Inoceramya, Intodesma, Jeletzkiella, Jianchuania, Kabyaipecten, Kaparachlamys, Kinderkaella, Kobayshites, Kochia, Kokanostrea, Konbostrea, Langsonella, Lenella, Lentilla, Leproconcha, Lilangina, Limanomia, Limatuella, Limatulina, Linsdallia, Lissochlamis, Lissopecten, Lithioperna, Lituyapecten, Loemmelella, Longidaonella, Lupherella, Lywcea, Maorimonotis, Mclearnia, Merismopteria, Minervapecten, Mixtipecten, Monopteria, Morrisipecten, Moussonella, Mrassiella, Mulletia, Myalinopterella, Mysidoptera, Mytiloceramus, Nanlingella, Nathorstella, Neithella, Neitheops, Neomorphotis, Neontolium, Newellipecten, Newsomella, Nodonychia, Notochlamy, Notovola, Novaculaperma, Opiotoptera, Orbiculopecten, Ornithopecten, Ostreinella, Ostreonella, Oxypteria, Pachymytilus, Pachyperna, Pachypteria, Pacimonotis, Palaeocardia, Palaeoentolium, Palaeopinna, Palmoxytoma, Parahalobia, Paraucellina, Parvochlamys, Pectinula, Pergamidia, Peribositra, Periclaria, Permoceramus, Pethopecten, Phialopecten, Pichlerella, Platygena, Plethocardia, Pleuromysidia, Plicatostylus, Pomiropecten, Pompeckjina, Praeamonotis, Praeaucellina, Praebuchia, Praesondylopecten, Procopievskia, Proostrea, Pseudavicula, Pseudentolium, Pseudodidymotis, Pseudogyra, Pseudoheligmus, Pseudopachymytilus, Pseudovola, Pterinoactinodesma, Pteronitina, Qiyangia, Raricardium, Regalilima, Reubenia, Rhyssomytiloides, Saintiopsis, Scythemtolium, Semuridia, Septihoernesia, Sergipia, Sichuania, Sinectenolium, Sokolowia, Soleniscostrea, Songdaella, Sorngyaceramus, Spia, Spyridopecten, Stappyersella, Stefaninia, Stefaniniella, Striatoceramus, Subulatachlamys, Tarturia, Texigryphaea, Titaonpecten, Trematiconcha, Trichiplatula, Turkmenia, Umburra, Unica, Uralopteria, Veldidenlla, Ventalium, Vertinomia, Vertumnia, Vulsellina, Wuxuanites, Xenium