Since Buffetaut (1982) demonstrated the shared characteristics of the early forms of Metriorhynchidae and Teleosauridae, Thalattosuchia has consisted of these two families.
Desde que Buffetaut (1982) demostrou as características compartidas das formas temperás de Metriorhynchidae e Teleosauridae, Thalattosuchia constou destas dúas familias.