Tunicata
Cephalochordata
Myxinoidea
Petromyzontida
Conodonta
Anaspida
Euphanerops
Jamoytius
Rhyncholepis
Pharyngolepis
Heterostraci
Arandaspida
Astraspis
pteraspid
cyathaspid
Athenaegis
Sphenonectris_turnerae
Galeaspida
Polybranchiaspidida
Eugaleaspidiformes
Furcacauda
Turinia_pagei
Sheilia_taiti
Phlebolepis_elegans
Loganellia
Tremataspi
Osteostraci
Zenaspis
Ateleaspis
Acanthothoraci
Arthrodira
jawed_vertebrates
Cladoselache
cg_Chondrichthyes