AdelophthalmidaeW
Adelophthalmidae
AraxoceratidaeW
Araxoceratidae
ChroniosuchiaW
Chroniosuchia
ChroniosuchidaeW
Chroniosuchidae
EtoushanocertidaeW
Etoushanocertidae
EurypteroideaW
Eurypteroidea
GorynychusW
Gorynychus
SuchonicaW
Suchonica