13-ornithopods - 460:206 DINOSAURS Ornithopoda The Bipedal...

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460:206 DINOSAURS The “Bipedal” Ornithischians: Heterodontosaurs, Iguanodonts, and Hadrosaurs Ornithopoda
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Order Ornithischia “Bird-like” pelvis Predentary bone (skull) Ossified tendons along vertebral column
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The “Bipedal” Ornithischians Ornithopods “bird-feet”
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The Ornithopods “bird foot”
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“Beaked Dinosaurs” would be better name What makes an Ornithopod is it’s mouth. Have premaxilla bone (front bone of the upper jaw) that overhangs the maxilla bone (second bone in upper jaw). Jaw joint is farther down than other dinos. = “beak” and powerful bite
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Five Families of Ornithopoda Heterodontosauridae Hypsilophodontidae *Dryosauridae Iguanodontidae Hadrosauridae
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Lambeosaurine 1. 2. 3. 4. A. B. Saurolophinae Hadrosaurinae Iguanodontidae Hypsilophodontidae Heterodontosauridae 5. 6. 7. 8. 9. 10. 1. Mostly bipedal, depressed jaw hinge Tooth row recessed below jaw margin
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Heterodontosauridae Hypsilophodonts Iguanodontidae Hadrosauridae Main differences are in teeth.
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This note was uploaded on 02/18/2011 for the course DINOSAURS 206 taught by Professor Neitzke during the Spring '11 term at Rutgers.

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13-ornithopods - 460:206 DINOSAURS Ornithopoda The Bipedal...

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