Sauropoda
Vulcanodontidae (primitive)
Macronaria (big norstrils)
Diplodocidae (long neck and whip tail)
Euhelopodidae (very long neck)
Dicraeosauridae (tall spines on the backbone)
Cetiosauridae (solid vertebrae)
Theropoda (meat
eaters):
Herrerasauridae (primitive)
Coelophysoidea (long and sleek)
Neoceratosauria (head crest)
Tetanurae
(stiff tail)
Spinosauria (crocodile jaws, sail on back)
Carnosauria (widespread meat-eaters)
Coelurosauria (lightweight bones)
Compsognathidae (small)
Troodontidae (killing claw on the toe)
Ornithomimosauria (ostrich-like)
Oviraptorosauria (toothless beak)
Alvarezsauria (stunted forelimbs)
Deinonychosauria (big killing claw on the second toe)
Tyrannosauroidea (late-evolving, large)
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Ornithischia (Bird-hipped dinosaurs, all
plant eaters)
Fabrosauridae
(primitive)
Heterodontosauridae
(different-size
teeth)
Thyreophora
(armoured)
Stegosauria (plated back)
Ankylosauria (armoured back)
Nodosauridae (spikes along the sides)
Ankylosauridae (broad snout)
Ankylosaurinae (clubs on the end of the tail)
Polacanthidae (spikes on the shoulders and shields on the hips)
Marginocephalia
(horns and shield around
the skull)
Pachycephalosauria (boneheads)
Ceratopsia
(hornheads)
Neoceratopisia (early, two-footed hornheads)
Ceratopsidae (big horned head)
Centrosaurinae (single horn on the nose)
Ceratopsinae (horns over the eyes)
Chasmosaurini (very large neck frill)
Ornithopoda
(bird-footed plant-eaters)
Hypsilophodontidae (small)
Iguanodontidae (heavy)
Hardosauridea (duck bill)
Lambeosaurinae (hollow crest)
Hadrosaurinae (solid crest, or no crest)
Edmontosaurini (no crest)
Maiasaurini (broad, solid crest above the eyes)
Saurolophini (pointed crest at the top of the skull)
Hadrosaurini (bulbous nose)
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