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Phylum ChordataLancelets | Cephalochordata | Tunicates | Urochordata |
Chondrichthyansjawed cartilaginous fishes | sharks and stingrays |
Gnathostomesvertebrates with a jaw | like sharks! |
tetrapodssarcopterygians with limbs | Need: | 4 limbs with digits | neck for seperate movement of head | fusion of pelvic girdle to backbone | ears for airborne sounds |
DinosauriaOrnithischia | bird hipped, herbivores | Saurischia | lizard hipped | | | herbivores- sauropods | | | carnivores- theropods | | | birds | Aves | birds | | | forelimbs into wings | | | keratinized feathers | | | hollow skeletons | | | no teeth |
| | Craniateschordates with a head | Have: | skull, brain, eyes and other sense organs, high metabolism | Example: | Hagfishes | Myxini |
Reptilesderived characters: | scales for waterproof | shelled eggs on land | lepidosaurs | lizards and snakes | archosaurs | crocodillians, dinos, bird, turtles |
| | Vertebratescraniates with a backbone | have vertebrae | Example: | Lampreys | petromyzontida |
Osteichthyansgnathostomes with bony endoskeletons | bony fishes!! | actinopterygii | ray-finned fishes | yellowfin tuna, seahorse |
Sarcopterygiilobe-finned fishes | Lungfish |
Tiktaalikan ancient sarcopterygian and tetrapod |
Amphibianssimple eggs with the embryo surrounded by a jelly coat | amniotes | tetrapods with amniotic eggs |
Mammaliamammals | amniotes with hair | derived characters: | mammary glands | hair | high metabolic rate | endothermy | large brain | different teeth | main groups | Monotremes | platypus, BASAL MAMMAL TAXA, still lay eggs | Marsupials | dont lay eggs, embryo connected to placenta then to pouch.. kangaroos! | Eutherians | most mammals |
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