PaleoDB taxon number: 303383
Parent taxon: Eurypterida according to Clarke and Ruedemann 1912
Sister taxa: Alkenopterus, Bassipterus, Brachyopterella, Brachyopterus, Buffalopterus, Ctenopterus, Cyrtoctenus, Dorfopterus, Dunsopterus, Echinognathus, Eocarcinosoma, Erettopterus, Erieopterus, Eurypterella, Eurypterella ornata, Eurypterina, Grossopterus, Hallipterus, Hastimima, Hibbertopterus, Holmipterus, Jaekelopterus, Kokomopterus, Lamontopterus, Lanarkopterus, Leiopterella, Megalograptus, Mixopterus, Moselopterus, Mycteropidae, Pagea, Palmichnium, Paracarcinosoma, Parahughmillera, Parahughmilleria, Pittsfordipterus, Rhenopterus, Ruedemannipterus, Salteropterus, Strobilopterus, Stylonurella, Stylonurina, Stylonuroides, Stylonurus, Syntomopterus, Tarsopterella, Thurandina, Truncatiramus, Tylopterella, Waeringopteroidea, Waeringopterus, Woodwardopteridae
Subtaxa: Acutiramus, Necrogammarus, Pterygotus
Type: Pterygotus
Ecology: nektobenthic carnivore