Ornithomimosaurs

With their toothless beaks and slender feet, the ornithomimosaurs looked like giant, featherless birds. But their ostrichlike appearance also had the dinosaur features of clawed hands and a long tail. Ornithomimosaurs were long-necked and large - up to 16 ft (5 m) long. They were among the fastest dinosaurs, racing on slim and powerful rear legs. A wide mouth enabled them to swallow sizable prey, such as small mammals, as well as insects and fruits.

Dromiceiomimus This dinosaur had ten neck vertebrae that made a flexible stem for its large-eyed head. It used its slender arms and three-fingered hands for grasping or holding prey.

Ornithomimosaur facts

• The name ornithomimosaur means "bird-mimic reptile.''

• Ornithomimosaurs may have ran as fast as 43 mph (70 km/h).

• Predators: carnosaurs and dromaeosaurs

• Predators: carnosaurs and dromaeosaurs

Ornithomimosaurs

Like an ostrich Struthiomimus had a similar running style to an ostrich. But unlike an ostrich, _ Struthiomimus had long, mobile arms which helped its clawed fingers grasp and hold prey. its long tail was an important balancer at high speed.

Ostrich speed -up to 50mph (80 km/h)

Ostrich speed -up to 50mph (80 km/h)

Ostrich Anatomy

Three locked foot bones

Foot and leg As in all other ornithomimosaurs, the feet and legs of Dromiceiomimus were built to give fast acceleration. Only the toes touched the ground - the foot bones were locked into a single, birdlike extension of the leg.

Sharp claws

Three locked foot bones

Sharp claws

Dinosaur Species

Gallimimus The largest ornithomimosaur was Gallimimus. it had a long and narrow, snouted head with large eyes for good sight. its weak jaws were covered by a sharp, horny beak.

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Responses

  • bud
    How fast were the ornithomimosaurs?
    8 years ago
  • Claire Bourbonnais
    Sombody could tell me how Ornithomimosaur hide was built ? Was it covered by feather or scale ? <br /><br />I need this information for an animation. <br /><br />Thanks for answering me.
    7 years ago
  • Audrey
    How big are the feet of the ornithomimosaur?
    4 months ago

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