Acutiramus bohemicus, Acutiramus cummingsi, Acutiramus macrophthalmus, Alkenopteridae, Brachyopterellidae, Brachyopterelloidea, Buffalopterus pustulosus, Carcinosoma ingens, Carcinosoma newlini, Carcinosoma scorpioides, Ciurcopterus, Cyrtoctenida, Cyrtoctenidae, Diploaspidida, Dolichocephala lacoana, Dolichopterus cumberlandicus, Dvulikiaspis, Erettopterus bilobus, Erieopterus brewsteri, Erieopterus latus, Eurypterus acuminatus, Eurypterus derbiensis, Eurypterus fischeri, Eurypterus giganteus, Eurypterus kokomoensis, Eurypterus minutus, Eurypterus pachycheirus, Eurypterus perornatus, Eurypterus pustulosus, Eurypterus ranilarva, Eurypterus robustus, Eurypterus stylus, Eurypterus swartzi, Eurysoma, Eurysoma newlini, Gigantostraca, Herefordopterus, Herefordopterus banksii, Hibbertopterina, Himantopterus, Himantopterus banksii, Himantopterus bilobus, Himantopterus maximus, Hughmilleria robusta, Hughmilleria socialis, Jaekelopteridae, Jaekelopterus howelli, Lanarkopteridae, Laurieipteridae, Loganamaraspis, Megalograptoidea, Mycteropoidea, Nahlyostaspis, Onychopterella kokomoensis, Pageidae, Pterygotus acuticaudatus, Pterygotus anglicus, Pterygotus atlanticus, Pterygotus barrandei, Pterygotus beraunensis, Pterygotus bilobus, Pterygotus blahai, Pterygotus bohemicus, Pterygotus buffaloensis, Pterygotus comes, Pterygotus cummingsi, Pterygotus fissus, Pterygotus globicaudatus, Pterygotus macrophthalmus, Pterygotus mcgrewi, Pterygotus mediocris, Pterygotus minor, Pterygotus osborni, Pterygotus perornatus, Pterygotus princetonii, Pterygotus quadraticaudatus, Rhenopterus diensti, Skrytyaspis, Slimonia acuminata, Strobilopteridae, Strobilopterus princetonii, Strobilopterus richardsoni, Stylonurella spinipes, Stylonurus armatus, Stylonurus ensiformis, Stylonurus logani, Stylonurus powriensis, Stylonurus scoticus, Stylonurus spinipes, Syntomopterella, Syntomopterus richardsoni, Tarsopterella scotica, Waeringopterus cumberlandicus, Woodwardopterina

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