Temporal range: Upper Cretaceous 77–66 mya
|Cast of an S. altus skeleton |
at the Royal Ontario Museum
Description[change | change source]
Struthiomimus is known from several skeletons and skulls.
It differed from Ornithomimus only in proportions and details. It had a typical build and skeletal structure for an ornithomimid. Its size was about 4.3 metres (14 ft) long and 1.4 metres (4.6 ft) tall at the hips, with a weight of about 150 kilograms (330 lb).
As with other ornithomimids, it had a small slender head on a long neck. The neck was about 40% of the length of the body in front of the hips. Its eyes were large and its jaws were toothless. Its vertebral column had ten neck vertebrae, thirteen back vertebrae, six hip vertebrae, and about thirty-five tail vertebrae. The tail was stiff and was probably used for balance. It ground food up in its gizzard, and may have been herbivorous or omnivorous. The animals were quite common, which suggests they were herbivores or omnivores, rather than pure carnivores.
References[change | change source]
- Currie, Philip J. (2005). "Theropods, including birds". In Currie, Phillip J.; Koppelhus, Eva (eds.). Dinosaur Provincial Park: a spectacular ancient ecosystem revealed. Bloomington: Indiana University Press. pp. 367–397. ISBN 0-253-34595-2.
- Paul, Gregory S. (1988). "Genus Ornithomimus". Predatory dinosaurs of the world. New York: Simon & Schuster. pp. 384–394. ISBN 0-671-61946-2.
- The dinosauria (2nd ed.). Berkeley, Calif.: University of California Press. 2004. ISBN 978-0-520-94143-4. OCLC 801843269.
- Osborn, Henry Fairfield (1917). "Skeletal adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus" (PDF). Bulletin of the American Museum of Natural History. 35: 733–771. Archived from the original (PDF) on 2007-07-20. Retrieved 2012-05-22.
- Barrett, Paul M 2005. The diet of ostrich dinosaurs (Theropoda: Ornithomimosauria). Palaeontology. 48 (2): 347–358.
- Paul, Gregory S. 1988. Genus Ornithomimus in Predatory Dinosaurs of the World. New York: Simon & Schuster. pp. 384–394. ISBN 978-0-671-61946-6