Diapsida Osborn, 1903

Luokittelu
Organism groupBiota
KingdomAnimalia
PhylumChordata
SubphylumVertebrata
Organism groupGnathostomata
SuperclassTetrapoda
ClassReptilia
SubclassEureptilia
unrankedDiapsida
OrderIchthyosauria
Sauropterygia