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Direct Paleobiological Analysis
Suchomimusvs.Acrocanthosaurus
A side-by-side scientific comparison of physiological dimensions, biomechanics, temporal horizons, and anatomical specializations.
Comparing 2 of maximum 4 specimens
TheropodaSuchomimus
Suchomimus tenerensis Sereno et al., 1998
A massive spinosaurid predator with crocodile-like jaws and a low dorsal sail that stalked Cretaceous Niger.
TheropodaAcrocanthosaurus
Acrocanthosaurus atokensis Stovall & Langston, 1950
A high-spined North American apex predator famous for hunting sauropods across Early Cretaceous river valleys.
Comparative Paleobiological & Anatomical Matrix
| Feature / Trait | Suchomimus | Acrocanthosaurus |
|---|---|---|
Total Length | 9.5–11 m (31.2–36.1 ft) Estimated maximum | 10–11.5 m (32.8–37.7 ft) Estimated maximum |
Hip Height | 3.2–3.8 m (10.5–12.5 ft) Model estimate | 3.4–4 m (11.2–13.1 ft) Model estimate |
Body Mass | 2.5–4.0 metric tons (5,512–8,818 lbs) Volumetric/allometric model | 4.5–6.5 metric tons (9,921–14,330 lbs) Volumetric/allometric model |
Epoch Horizon | Cretaceous Period 121–112 Ma (million years ago) | Cretaceous Period 113–110 Ma (million years ago) |
Diet & Trophic Role | Piscivore Large freshwater fish, sharks, small turtles, and juvenile terrestrial dinosaurs. | Carnivore Hunted sauropods like Sauroposeidon and ornithopods like Tenontosaurus. |
Taxonomic Clade | Theropoda(Suborder) | Theropoda(Suborder) |
Fossil Localities | Elrhaz Formation, Gadoufaoua, Niger Named: 1997 | Antlers Formation, Atoka County, Oklahoma, United States Named: 1940 |
Locomotion & Behavior | Large fish-eating spinosaurid theropod featuring an elongated, crocodile-like snout and massive thumb claws. In the ancient river channels of the Elrhaz Formation, Suchomimus hunted alongside broad-beaked sauropods like [Nigersaurus](/dinosaurs/nigersaurus) and preyed upon herbivores like [Ouranosaurus](/dinosaurs/ouranosaurus). | Apex pursuit predator that shared the Early Cretaceous coastal plain ecosystem with contemporary dromaeosaurids like [Deinonychus](/dinosaurs/deinonychus) and large ornithopods like [Tenontosaurus](/dinosaurs/tenontosaurus). Trackway assemblages and body fossils indicate it operated as the dominant carnivore across these ancient river deltas. |
Holotype & Fossils | Approximately 70% complete holotype skeleton including partial skull, vertebrae, and giant hand claw. | Spectacular complete specimen 'Fran' (NCSM 14345) mounted at the North Carolina Museum of Natural Sciences. |
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.