Aethodionide, Ajacicrepida, Alsataspididae, Amginia, Andrarinidae, Anomocarellidae, Anomocaridae, Anomocariopsis, Apatokephalina, Aphelaspididae, Apheloides, Artokephalus, Asaphidae, Asaphina, Atopasaphus, Auritama, Auritamidae, Bandalaspis, Beigongia, Bernia, Bettonia, Blandicephalus, Bohemaspis, Bohemillidae, Borogothus, Borthaspis, Boschchekulia, Brandysops, Bumastides, Caganaspis, Callaspis, Camaraspoides, Caulaspis, Caznaia, Ceratolithus, Ceratopygidae, Ceronocare, Chondranomocare, Clavatellus, Cremastoglottos, Cyclopygidae, Cyphoniscus, Digrypos, Dikelocephalacea, Dikelocephalidae, Dikelocephalinidae, Dikelocephalopsis, Dionididae, Dipleuropyge, Doremataspis, Duibianaspis, Ectenaspis, Eirelithus, Elkia, Elongatanileus, Eoapatokephalus, Eoasaphus, Eoptychaspis, Eowuhuia, Erbenia, Eurekiidae, Flabellocephalus, Fritchaspis, Galerosaukia, Glyphopeltis, Gogiura, Golasaphus, Hastiremopleurides, Homalopyge, Hukasawaia, Hungaiidae, Idahoiidae, Iranella, Isyrakopeltis, Ityophorus, Kaniniella, Kazelia, Kobayashella, Kogenium, Kokuria, Lakaspis, Lannacus, Liaoningella, Lichengia, Lingukainella, Liostracinidae, Liostracinoides, Lophoholcus, Lycophron, Lynaspis, Macropygella, Macrotoxus, Madarocephalus, Mansuyella, Mapanopsis, Meeria, Metayuepingia, Mioptychopyge, Monkaspididae, Nadiyella, Nanlingia, Neopeltis, Nileidae, Nomadinis, Norasaphus, Notoaphelaspis, Osceolia, Paivinia, Palella, Parabolinoididae, Parabumasttides, Paramansuyella, Paraphillipsinella, Paratrinucleus, Pedinocephalina, Pedinocephalus, Plecteuloma, Plesiyuepingia, Portentosus, Psalaspis, Pseudampyxina, Pseudocyclopyge, Pseudoptyocephalus, Pterocephaliidae, Ptychaspididae, Quitacetra, Quitalia, Raphiophoridae, Remopleuridae, Remopleurididae, Rhyssometopidae, Rhyssometropus, Richardsonellidae, Saimachia, Saukiidae, Saukioides, Scinocephalus, Sigmakainella, Sinosaukia, Stenochilina, Stigmacephaloides, Taihungshaniidae, Taklamakania, Tchukeraspis, Telaemarrolithus, Temnoura, Theodensia, Toernquistina, Tramoria, Trigonoaspis, Trinucleidae, Walcottaspis, Xenasaphus, Yumenaspis