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Direct Paleobiological Analysis
Ouranosaurusvs.Corythosaurus
A side-by-side scientific comparison of physiological dimensions, biomechanics, temporal horizons, and anatomical specializations.
Comparing 2 of maximum 4 specimens
OrnithopodaOuranosaurus
Ouranosaurus nigeriensis Taquet, 1976
The 'brave lizard', an unusual African iguanodontian bearing a high dorsal sail and camel-like fat hump.
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 | Ouranosaurus | Corythosaurus |
|---|---|---|
Total Length | 7–8.3 m (23.0–27.2 ft) Estimated maximum | 8.5–10 m (27.9–32.8 ft) Estimated maximum |
Hip Height | 2.5–3 m (8.2–9.8 ft) Model estimate | 3–3.8 m (9.8–12.5 ft) Model estimate |
Body Mass | 2.0–3.5 metric tons (4,409–7,716 lbs) Volumetric/allometric model | 3.0–4.5 metric tons (6,614–9,921 lbs) Volumetric/allometric model |
Epoch Horizon | Cretaceous Period 125–112 Ma (million years ago) | Cretaceous Period 77–75 Ma (million years ago) |
Diet & Trophic Role | Herbivore Low vegetation, leaves, ferns, and seeds ground with rows of 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 | Elrhaz Formation, Gadoufaoua, Niger Named: 1965 | Dinosaur Park Formation, Alberta, Canada Named: 1911 |
Locomotion & Behavior | Herbivorous iguanodontian with tall dorsal neural spines forming a distinctive sail or fleshy hump along its back. Inhabiting the tropical river deltas of Gadoufaoua, Ouranosaurus lived sympatrically with grazing sauropod [Nigersaurus](/dinosaurs/nigersaurus) and was preyed upon by the large spinosaurid [Suchomimus](/dinosaurs/suchomimus). | 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 | Two nearly complete articulated skeletons on display in Niamey and Venice. | 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.