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Definition of ostrich dinosaur in English: ostrich dinosaurnoun A lightly built toothless bipedal dinosaur of the late Cretaceous period, adapted for running and somewhat resembling an ostrich. Infraorder Ornithomimisauria, suborder Theropoda, order Saurischia: several genera, including Gallimimus, Ornithomimus, and Struthiomimus Also called ornithomimosaur Example sentencesExamples - Ankle aside, Effigia had large eyes, a long tail, and a toothless beak - not unlike the ostrich dinosaurs.
- Despite the reptile's resemblance to an ostrich dinosaur, or ornithomimid, Effigia is actually some 80 million years older.
Definition of ostrich dinosaur in US English: ostrich dinosaurnoun A lightly built toothless bipedal dinosaur of the late Cretaceous period, adapted for running and somewhat resembling an ostrich. Infraorder Ornithomimisauria, suborder Theropoda, order Saurischia: several genera, including Gallimimus, Ornithomimus, and Struthiomimus Also called ornithomimosaur Example sentencesExamples - Despite the reptile's resemblance to an ostrich dinosaur, or ornithomimid, Effigia is actually some 80 million years older.
- Ankle aside, Effigia had large eyes, a long tail, and a toothless beak - not unlike the ostrich dinosaurs.
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