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Direct Paleobiological Analysis
Edmontosaurusvs.Corythosaurus
A side-by-side scientific comparison of physiological dimensions, biomechanics, temporal horizons, and anatomical specializations.
Comparing 2 of maximum 4 specimens
OrnithopodaEdmontosaurus
Edmontosaurus regalis Lambe, 1917
A colossal duck-billed hadrosaurid that was the primary herbivore of Late Cretaceous North America.
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 | Edmontosaurus | Corythosaurus |
|---|---|---|
Total Length | 11–13.5 m (36.1–44.3 ft) Estimated maximum | 8.5–10 m (27.9–32.8 ft) Estimated maximum |
Hip Height | 3.5–4.5 m (11.5–14.8 ft) Model estimate | 3–3.8 m (9.8–12.5 ft) Model estimate |
Body Mass | 4.0–8.5 metric tons (8,818–18,739 lbs) Volumetric/allometric model | 3.0–4.5 metric tons (6,614–9,921 lbs) Volumetric/allometric model |
Epoch Horizon | Cretaceous Period 73–66 Ma (million years ago) | Cretaceous Period 77–75 Ma (million years ago) |
Diet & Trophic Role | Herbivore Horsetails, conifers, flowering plant leaves, and seeds ground with dental batteries of over 1,000 teeth. | Herbivore Conifer needles, fruits, seeds, and tender dicot leaves processed with thousands of grinding teeth. |
Taxonomic Clade | Ornithopoda(Suborder) | Ornithopoda(Suborder) |
Fossil Localities | Horseshoe Canyon Formation, Alberta, Canada Named: 1892 | Dinosaur Park Formation, Alberta, Canada Named: 1911 |
Locomotion & Behavior | Abundant duck-billed hadrosaur traveling in extensive migratory herds across western North America. In both the Horseshoe Canyon and Hell Creek Formations, Edmontosaurus was a primary food source for apex predators like [Tyrannosaurus rex](/dinosaurs/tyrannosaurus-rex), while sharing lowland floodplains with [Triceratops](/dinosaurs/triceratops). | 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 | Multiple complete mummies preserving soft tissue, skin impressions, foot pads, and stomach contents. | 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.