derived charactoristics
Chordates
D.C = notochord (skeletal support)
Dorsal
Major clade: Oruchordata
Example: lancelets
Craniates
D.C = head
Major Clade: Maxini
example: Hanfish
vertebrates
D.C: Skeleton (vertebral column)
Major clade: Oetromyzontida
example: lampreys
Gnathostomes
D.C: Jaws
M.C : Chondrichthyes
example: Sharks
Osteichthyans
D.C lung
M.C Actinoterygii
Example: ray finned fishes
Lobe-fins
D.C Lobe fins
M.C: actinistia/Dipnoi
ex. lungfishes
Tetrapods
D.C Four feet/limbs w digits
M.C: Amphibian
ex. salamander
Amniotes
D.C amnootic eggs
M.C reptiles
ex. turtles, snakes, crocodiles
Amniotes (mammalia)
D.C: hair/produce milk
M.C : monotres, marsupials, eutherians
ex.kangaroos/opossums