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STRUTHIOMIMUS

a plant-eating ornithomimid theropod dinosaur from the Late Cretaceous of Canada.
struthiomimus
Pronunciation: STROOTH-ee-o-MIEM-us
Meaning: Ostrich mimic
Author/s: Osborn (1917)
Synonyms: Ornithomimus altus
First Discovery: Alberta, Canada
Discovery Chart Position: #121

Struthiomimus altus

struthiomimus-skeleton Unlike the ridiculously-named Struthiosaurus (the "ostrich lizard" that's an armoured, four-legged, nodosaurid ankylosaur), Struthiomimus (the "Ostrich mimic") actually boasts some similarities to its namesake. It has long legs, a small toothless skull, and the ability to outrun most things, just like the modern Ostrich (Struthio). However, so does a dinosaur called Ornithomimus, and that's exactly where Struthiomimus spent the best part of two decades, having been assigned there as Ornithomimus altus by Lawrence Lambe in 1902.
(Lofty ostrich mimic)Etymology
Struthiomimus is derived from the Greek "strouthion" (ostrich) and "mimos" (mimic) because the shape of its head, neck and legs are similar to those of a modern ostrich.
The species epithet, altus, means "lofty" (or tall) in Latin.
Discovery
The holotype of Struthiomimus (NMC 930—a partial skeleton) was discovered in the Oldman Formation (Belly River Group), Steveville, Alberta, Canada, by Lawrence Lambe in 1901.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Campanian-Maastrichtian
Age range: 80-66 mya
Stats:
Est. max. length: 5 meters
Est. max. hip height: 1.6 meters
Est. max. weight: 150 Kg
Diet: Omnivore
References
• Lambe LM (1902) "New genera and species from the Belly River Series (mid-Cretaceous)". Geological Survey of Canada Contributions to Canadian Palaeontology, 3: 25-81.
• Osborn HF (1916) "Skeletal adaptations of Ornitholestes, Struthiomimus, Tyrannosaurus". Bulletin of the American Museum of Natural History, 35: 733–771.
• Parks WA (1926) "Struthiomimus brevetertius - A new species of dinosaur from the Edmonton Formation of Alberta". Transactions of the Royal Society of Canada, Series 3, 20(4): 65-70.
• Parks WA (1928) "Struthiomimus samueli, a new species of Ornithomimidae from the Belly River Formation of Alberta". University of Toronto Studies, Geology Series, 26: 1–24.
• Parks WA (1933) "New species of dinosaurs and turtles from the Upper Cretaceous formations of Alberta". University of Toronto studies, Geological series, 34: 1-33.
• Russell DA (1972) "Ostrich dinosaurs from the late Cretaceous of western Canada". Canadian Journal of Earth Sciences, 9(4): 375-402.
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To cite this page:
Atkinson, L. "STRUTHIOMIMUS :: from DinoChecker's dinosaur archive".
›. Web access: 06th Mar 2026.
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