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31 Cards in this Set
- Front
- Back
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Dinosauria |
In-turned femoral Opposable |
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Saurischia |
Long cervical Thumb claw Long hand (ii longest) |
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Sauropodomorpha |
Blunt teeth Tiny head |
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Theropoda |
Flexible jaw 5+ sacral Distal tail |
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Ceratosauria |
Ilium & ischium fused |
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Tetanurae |
Maxillary Distal 1/2 Lacks haemal |
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Allosauria |
Antorbital fenestra expanded upward |
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Coelurosauria |
Solid sternum Long hands |
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Arctometatarsalia |
iii tapers to thin wedge Metatarsals long/slender |
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Ornithomimosauria |
Teeth lost / Beak development All metas long / equal |
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Tyrannosauridae |
Phalanges of digit iii lost |
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Maniraptora |
Distal 3/4 Pubis points down and backwards |
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Avialae |
Enlarged brain Feathers <25 caudal vertebrae Forelimb > hindlimb |
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Ornithorae |
Fibula shortened Ossified sternum |
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Ornithoraces |
Metatarsal V lost |
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Carinatae |
Fusion of metatarsus Pelvic elements fused |
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Aves |
Teeth lost Humerus with pneumatic fossa/foramen |
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Neognathe |
Ilium and Ischium fused Beak articulated to skull at mobile point |
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Paleognathe |
Flexible beak Naris confluent with antorbital fenestrae |
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Hesperornithoformes |
Clavicles unfused Wings reduced |
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Ornithischia |
Predentary bone in lower jaw Backturned pubis Blunt teeth |
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Genosauria |
Teeth inset from margin |
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Cerapoda |
Asymmetrical distribution of tooth enamel |
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Marginocephalia |
Expanded shelf at back of skull |
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Ceratopsia |
Rostral bone in upper jaw to form beak |
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Pachycephalosauria |
Thickened skull roof |
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Euornithopoda |
Articulation of skull & Jaw below tooth row |
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Thyreophora |
Armor of bony scutes Tibia < Femur |
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Eurypoda |
Anterior portion of ilium shorter than posterior |
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Stegosauria |
Scutes enlarged to form 2 rows of large plates along vertebral column |
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Ankylosauria |
Mosaic of interlocking scutes cover body |
