Avians

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9 Terms

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Ornithiscians

Herbivores, duck-billed dinosaurs, stegosaurs, ankylosaurs, horned dinosaurs

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Sauropods

Long-necked, long-tailed herbivore dinosaurs

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Therapods

Carnivores

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Tridactyl Foot

Foot with 3 digits

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Furcula

Fused clavicle, stabilizes pectoral girdle, the “wishbone” part of avians

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Digitigrade Posture

Weight of the organism is carried on the digits

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Dromeosaurs

Have a wrist structure that allowed them to flex wrist sideways while rotating them, shoulder joint oriented laterally

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Dromeosaurs

Sister group to birds

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Archaeopteryx

Transitional organism with some dinosaur characteristics and some avian characteristics