Saurischia

1
Staurikosaurus Herrerasaurs
Pachycephalosauria
Ankylosauria
Prosauropoda
Ornithopoda
Stegosauria
Fabrosauridae
Ceratopsia
Sauropoda
Theropoda
Marginocephalia
Saurischia
Thyreophora
Ornithischia
Dinosaurs
2
10 cm
Lesothosaurus
3
Heterodontosauridae
Hypsilophodontidae
Tenontosaurus
Iguanodontidae
Hadrosauridae
Dryosauridae
Orntihopoda
4
Offset of tooth row
Lower jaw joint very low
10 mm
Heterodontosaurus Skull
5
Worn
Unworn
5 mm
Heterodontosaurid Teeth
6
10 cm
Heterodontosaurus
7
20 cm
Hypsilophodon
8
2 cm
Teeth
Skull
Lower Jaw
2 cm
Hypsilophodon Dental Battery for Grinding
Vegetation
9
1 meter
Iguanodon
10
1 meter
Edmontosaurus
11
Hadrosaurid Dental Battery
50 mm
12
Hadrosaurines
Lambeosaurines
13
1 meter
Parasaurolophus
14
Male
20 cm
Female?
Sexual Dimorphism in Crested Hadrosaurs
15
Nostril
Nostril
Nostril
Parasaurolophus
Lambeosaurus
Corythosaurus
16
Skin Impression