What makes Suchomimus scientifically significant?

Suchomimus provides critical insights into the evolutionary radiation of Theropoda. Holotypes and fossil evidence indicate: Approximately 70% complete holotype skeleton including partial skull, vertebrae, and giant hand claw.

Suchomimus (Suchomimus tenerensis Sereno et al., 1998) - Size, Diet & Cretaceous Period Facts

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Suchomimus (Suchomimus tenerensis Sereno et al., 1998) - Size, Diet & Cretaceous Period Facts | DinoOrigin

Evolutionary Taxonomy & Cladistics

View Dinosaur Phylogeny

Phylogenetic classification of Suchomimus tenerensis Sereno et al., 1998 based on peer-reviewed cladistic analyses of diagnostic skeletal synapomorphies.

Taxonomic Rank	Taxon / Clade	Diagnostic Context
Kingdom	Animalia	Monophyletic prehistoric clade
Phylum	Chordata	Monophyletic prehistoric clade
Clade	Dinosauria	Monophyletic prehistoric clade
Order	Saurischia (Lizard-Hipped Dinosaurs)	Characterized ancestrally by a triradiate pelvis with an anteriorly pointing pubis.
Suborder	Theropoda	Bipedal saurischian dinosaurs, historically dominated by carnivores and including the avian lineage.
Genus	Suchomimus	Monophyletic prehistoric clade
Species	Suchomimus tenerensis Sereno et al., 1998	Specific authority designation

Anatomy & Physical Characteristics

Suchomimus ('crocodile mimic') was an immense spinosaurid theropod that inhabited the lush freshwater river systems of what is now the Sahara Desert in Niger. Reaching lengths of 11 meters, it possessed a low neural spine sail extending over its lower back and hips.

Its long, narrow snout was armed with over 100 backward-pointing, finely serrated conical teeth designed to grip slippery prey like Mawsonia (a giant coelacanth) and juvenile dinosaurs.

Diagnostic Morphological Traits

Elongated gavial-like snout, low dorsal sail, powerful arms with 30-centimeter sickle claws, and bipedal gait.

Comparative Scale & Biometrics

Anatomical dimensions relative to an average adult human (1.8 m / 6 ft tall)

Approx. 6.1× human length

Suchomimus (Length)9.5–11 m (31.2–36.1 ft)

Adult Human1.8 m (6.0 ft)

Length

9.5–11 m (31.2–36.1 ft)

Height

3.2–3.8 m (10.5–12.5 ft)

Estimated Mass

2.5–4.0 metric tons (5,512–8,818 lbs)

Diet & Feeding Ecology

All Piscivore Species

Trophic Guild: Piscivore

Large freshwater fish, sharks, small turtles, and juvenile terrestrial dinosaurs.

Paleobiology & 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 and preyed upon herbivores like Ouranosaurus.

Habitat & Ecological Biome

Prehistoric Depositional Setting

Vast inland river deltas, tropical floodplains, and mangrove channels of the Ténéré Desert.

Fossil Evidence & Specimen Records

Preserved Skeletal Material & Bonebeds

Approximately 70% complete holotype skeleton including partial skull, vertebrae, and giant hand claw.

Discovery & Taxonomic Naming History

Year of Discovery / Description1997

Type Specimen Locality & FormationElrhaz Formation, Gadoufaoua, Niger

Discovered by an expedition led by American paleontologist Paul Sereno in the Sahara Desert.

Geological Era & Chronostratigraphy

Explore All Cretaceous Period Fauna

Cretaceous Period PeriodTemporal Interval: 121–112 Ma (million years ago)

The longest and final period of the Mesozoic Era, characterized by the rise of flowering plants, ceratopsians, hadrosaurs, tyrannosaurids, and concluding with the Chicxulub asteroid impact.

Where It Lived & Paleoenvironment

Africa Dinosaurs

During the Mesozoic Era, continental drift progressively reconfigured land bridges, atmospheric currents, and regional precipitation regimes. Fossils of Suchomimus evidence its adaptation to the paleoenvironments of Africa.

Paleogeographic RealmAfrica (Africa)

Featuring the Bahariya and Kem Kem deltaic systems of North Africa, home to colossal riverine theropods and unique freshwater ecosystems.

Fossil Discovery Locality

Scientific Significance & Evolutionary Impact

The anatomical architecture of Suchomimus serves as a crucial benchmark in vertebrate paleontology, illustrating key adaptive radiations within Theropoda.

Phylogenetic Placement: Informs cladistic debates concerning the divergence, skull biomechanics, and skeletal evolution of Cretaceous Period fauna.
Paleoecological Guild: Documents trophic specialization (Piscivore) and predator-prey dynamics across its regional ecosystem.
Taphonomic Record: Approximately 70% complete holotype skeleton including partial skull, vertebrae, and giant hand claw.

Frequently Asked Questions About Suchomimus

Scientifically verified answers based on peer-reviewed paleontological evidence.

Q1.When did Suchomimus live?

Suchomimus lived during the Cretaceous Period Period, approximately 121–112 Ma (million years ago). This places it within the Mesozoic Era.

Q2.How big was Suchomimus?

Paleontological estimates place Suchomimus at a length of 9.5–11 m (31.2–36.1 ft), a hip/standing height of 3.2–3.8 m (10.5–12.5 ft), and a body mass of 2.5–4.0 metric tons (5,512–8,818 lbs).

Q3.What was the diet of Suchomimus?

Classified as a piscivore, Suchomimus specialized in consuming Large freshwater fish, sharks, small turtles, and juvenile terrestrial dinosaurs..

Q4.Where were Suchomimus fossils discovered?

Fossil specimens of Suchomimus have been recovered from Elrhaz Formation, Gadoufaoua, Niger, with notable historic specimens documented in 1997. Discovered by an expedition led by American paleontologist Paul Sereno in the Sahara Desert.

Academic Literature & Peer-Reviewed References

Authoritative citations establishing the factual taxonomy, biometrics, and anatomy of Suchomimus.

ScienceView Publication
Sereno, P. C., Beck, A. L., Dutheil, D. B., et al. (1998). A long-snouted predatory dinosaur from Africa and the evolution of spinosaurids. Science, 282(5392), 1298-1302. https://doi.org/10.1126/science.282.5392.1298
Curated & Verified: 2026-09-24

Suchomimus

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