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Direct Paleobiological Analysis
Tenontosaurusvs.Corythosaurus
A side-by-side scientific comparison of physiological dimensions, biomechanics, temporal horizons, and anatomical specializations.
Comparing 2 of maximum 4 specimens
OrnithopodaTenontosaurus
Tenontosaurus tilletti Ostrom, 1970
A muscular Early Cretaceous ornithopod with an exceptionally long, deep tail, famous as the prey of Deinonychus.
OrnithopodaCorythosaurus
Corythosaurus casuarius Brown, 1914
A hollow-crested hadrosaurid from Alberta possessing a tall, semicircular helmet crest for sound resonance.
Comparative Paleobiological & Anatomical Matrix
| Feature / Trait | Tenontosaurus | Corythosaurus |
|---|---|---|
Total Length | 6–7 m (19.7–23.0 ft) Estimated maximum | 8.5–10 m (27.9–32.8 ft) Estimated maximum |
Hip Height | 2–2.4 m (6.6–7.9 ft) Model estimate | 3–3.8 m (9.8–12.5 ft) Model estimate |
Body Mass | 1.0–2.0 metric tons (2,205–4,409 lbs) Volumetric/allometric model | 3.0–4.5 metric tons (6,614–9,921 lbs) Volumetric/allometric model |
Epoch Horizon | Cretaceous Period 115–108 Ma (million years ago) | Cretaceous Period 77–75 Ma (million years ago) |
Diet & Trophic Role | Herbivore Cycads, ferns, horsetails, and early flowering angiosperms ground with cheek teeth. | Herbivore Conifer needles, fruits, seeds, and tender dicot leaves processed with thousands of grinding teeth. |
Taxonomic Clade | Ornithopoda(Suborder) | Ornithopoda(Suborder) |
Fossil Localities | Cloverly Formation, Montana, United States Named: 1903 | Dinosaur Park Formation, Alberta, Canada Named: 1911 |
Locomotion & Behavior | Medium-sized ornithopod herbivore possessing an unusually long, stiffened tail. Preserved frequently in the Cloverly Formation in multi-predator association with [Deinonychus](/dinosaurs/deinonychus), Tenontosaurus was a primary food source for regional carnivores including [Acrocanthosaurus](/dinosaurs/acrocanthosaurus). | Herbivorous hadrosaurid that used its hollow helmet-like cranial crest as an acoustic resonating chamber and visual display structure. In the Dinosaur Park ecosystem, Corythosaurus lived sympatrically with related crest-bearing hadrosaurs like [Parasaurolophus](/dinosaurs/parasaurolophus) and horned herbivores like [Centrosaurus](/dinosaurs/centrosaurus). |
Holotype & Fossils | Dozens of articulated skeletons, frequently found in direct association with Deinonychus. | Nearly complete skeletons with preserved skin impressions and ossified tendons. |
Paleontological Uncertainty Advisory: Anatomical dimensions, body masses, and metabolic rates are scientific estimates derived from volumetric scaling, laser scanning, and biomechanical limb bone allometry. Missing traits indicate non-preserved fossil elements rather than anatomical absence.