Biology — Phylogeny: vertebrate classes
A cladogram of the major vertebrate groups (branch lengths ≈ MYA).
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(((((Mammals:310,Birds:310):20,Reptiles:330):20,Amphibians:350):50,Fish:400):50,Lamprey:450);
A cladogram of the major vertebrate groups (branch lengths ≈ MYA).
(((((Mammals:310,Birds:310):20,Reptiles:330):20,Amphibians:350):50,Fish:400):50,Lamprey:450);