S
ActinistiaW
Actinistia
ArandaspidaW
Arandaspida
A
ArchaeornithesW
Archaeornithes
CladistiaW
Cladistia
B
CornuataW
Cornuata
LungfishW
Lungfish
C
ElasmobranchiiW
Elasmobranchii
HeterostraciW
Heterostraci
D
PteraspidomorphiW
Pteraspidomorphi
HolocephaliW
Holocephali
E
PtychodusW
Ptychodus
RhipidistiaW
Rhipidistia
F
TheriiformesW
Theriiformes
YinotheriaW
Yinotheria