Carcharodontosaurus: the North African giant

Carcharodontosaurus saharicus was a giant predatory theropod from North Africa during the Cenomanian stage of the Late Cretaceous, roughly 100–94 million years ago. It belonged to Carcharodontosauridae, a family of large allosauroid predators unrelated to tyrannosaurids. The genus is famous for its enormous, serrated teeth and partial skull, but its complete body skeleton is not known.

The history of the name is unusually complicated. The first fossils were teeth from Algeria and were later lost. A partial skull from Morocco became the neotype used to anchor the name C. saharicus. A famous Egyptian skeleton once included in reconstructions of the species was reassigned in 2025 to the separate genus Tameryraptor. Modern accounts therefore need to distinguish the animal represented by the Moroccan neotype from other North African predators.

Quick facts

Name and discovery

The genus name means “shark-toothed lizard”. It refers to large, blade-like teeth with serrated edges, not to a close relationship with sharks or an aquatic way of life. The species epithet saharicus refers to the Sahara region. The name was coined at a time when the African fossil record was far less complete than it is today.

In 1924, German palaeontologist Ernst Stromer described two large teeth collected in Algeria and named them Megalosaurus saharicus. Later, in 1931, he recognised that the animal was distinct from Megalosaurus and erected the genus Carcharodontosaurus. The original material was held in Munich but was destroyed during the bombing of the city in 1944. The teeth can no longer be re-examined.

For decades, researchers used a large Egyptian skeleton to reconstruct the species. It had been collected by Stromer in the Bahariya Formation and was also destroyed during the 1944 bombing. Because it had been described as Carcharodontosaurus saharicus, illustrations combined its skull and skeleton with other fossils assigned to the genus.

A partial skull from Morocco, specimen SGM-Din 1, was described in 1996. In 2007 it was designated the neotype of C. saharicus, replacing the lost original teeth as the reference specimen for the name. A 2025 reassessment supported that decision and separated the Egyptian animal as Tameryraptor markgrafi. Thus the Egyptian skeleton can no longer fill the missing anatomy of the Moroccan species.

Classification and species names

Carcharodontosaurus is a theropod in Allosauroidea and Carcharodontosauridae. Many analyses place the genus among derived carcharodontosaurines, alongside very large predators such as Giganotosaurus and Mapusaurus. The exact relationships among these genera vary with the fossils and methods used. A phylogenetic tree is a hypothesis about shared ancestry, not a ladder in which one famous genus must have become another.

It was not a tyrannosaurid and was not an African species of Tyrannosaurus. Both lineages produced large, bipedal predators, but carcharodontosaurids belonged to the allosauroid branch, whereas tyrannosaurids were coelurosaurs. Similar ecological roles and body size do not make them close relatives.

The secure name-bearing species is C. saharicus. Carcharodontosaurus iguidensis was named in 2007 from Niger, with a left maxilla, MNN IGU2, as its holotype. Other isolated bones assigned to that species came from different individuals. Recent analyses have not consistently recovered it as a species of Carcharodontosaurus, so the generic placement remains uncertain.

A vertebra, MNN IGU11, once referred to C. iguidensis was interpreted in 2026 as belonging to Spinosaurus mirabilis. That reassignment does not erase the species, whose name is based on the maxilla. It does show why isolated bones should not automatically be combined. Other proposed North African carcharodontosaurids, including Sauroniops, have also had disputed status. The dinosaur catalogue provides access to these separate profiles without implying that all assignments are settled.

Which fossils belong to C. saharicus?

The original Algerian teeth are lost, so the partial Moroccan skull SGM-Din 1 is now the neotype. It preserves much of the upper jaw, parts of the skull roof and braincase, but lacks the premaxillae, quadrate bones and much of the palate. It is a substantial skull fragment, not a complete head and not a skeleton.

Several neck vertebrae and other isolated bones from the Kem Kem region have been referred to C. saharicus. If an element does not overlap the neotype anatomically, it may be difficult to prove that it belongs to the same species. North Africa hosted multiple large theropods with broadly similar teeth, making tooth-only identifications especially uncertain.

The Niger material named C. iguidensis includes a maxilla, parts of the braincase, lacrimal and lower jaw, as well as teeth. It is not a single articulated skeleton. A partial skull and skeleton from the Farak Formation was reported in 2026 as Carcharodontosaurus sp., but until a detailed description appears, it cannot securely expand the diagnosis or known proportions of the genus.

Most importantly, no complete, indisputable skeleton of C. saharicus is known. The head is the best-supported part of its anatomy. Body length, mass, limb proportions and the shape of the tail must be inferred by comparing the skull with better-known allosauroids and other carcharodontosaurids.

Size and anatomy

Researchers commonly estimate C. saharicus at around 11–13 metres long, with a mass in the broad range of roughly 4–7 tonnes. These are model-based estimates, not direct measurements. The neotype lacks the associated long bones of the limbs that could independently anchor body proportions, and the upper end of any range depends on how the missing trunk and limbs are reconstructed.

The complete skull may have been approximately 1.4–1.6 metres long. A large opening in front of the eye and internal air spaces reduced the mass of the skull bones. The snout was deep, and the maxilla and nasal region carried grooves and roughened areas. These surface textures may relate to blood supply beneath the skin, but they do not preserve the exact shape or colour of soft tissues.

The teeth were long, laterally compressed and serrated, with folds along the enamel margins in some specimens. This construction formed a cutting edge well suited to damaging flesh. It does not by itself reveal the force of a bite or a single way of killing prey. Those questions require modelling and comparisons that depend on skull shape and muscle assumptions.

Less is known about the body. Like other large theropods, Carcharodontosaurus stood and moved on two hind limbs and had a long balancing tail. Its forelimbs are usually reconstructed from relatives, so their exact length and hand anatomy are uncertain. No skin impressions establish colour or body covering, and the partial skull cannot provide a dependable top running speed.

North African environment and diet

C. saharicus lived during the Cenomanian of the Late Cretaceous Period. The Moroccan Kem Kem Group preserves river channels, floodplains and coastal plain deposits in a warm, seasonal landscape. Fish and crocodile relatives were diverse, while the same broader regional record includes spinosaurids, abelisaurids, Deltadromeus, pterosaurs and sauropods.

Those animals did not necessarily occupy one precise place at the same moment. Rock units accumulate over time and across landscapes, and bones can be transported before burial. A list of species from one formation should not be read as a photograph of a single encounter or a complete local food web.

Carcharodontosaurus was carnivorous, and its size and cutting teeth are consistent with feeding on large vertebrates. Isotope studies of teeth attributed to North African carcharodontosaurids have been interpreted as evidence for substantial use of terrestrial food webs, in contrast with a stronger aquatic signal in some spinosaurids. Isolated teeth are not always identifiable to species, so this is an ecological inference about a broader group, not direct proof of the diet of C. saharicus.

The animal may have hunted living prey and scavenged carcasses, as many large predators can. No widely accepted bite marks or stomach contents identify a specific meal by this species. There is likewise no evidence that it hunted in coordinated packs or regularly fought Spinosaurus. Their occurrence in the same regional deposits does not establish a dramatic rivalry.

Outdated reconstructions and common mistakes

The most important outdated reconstruction joins the Moroccan skull to the Egyptian skeleton. After the Egyptian material was separated as Tameryraptor, that composite can no longer be presented as the directly known anatomy of C. saharicus. The Egyptian bones remain evidence for another large carcharodontosaurid, but they do not automatically complete the Moroccan species.

Calling it an “African tyrannosaur” is also misleading. The phrase may communicate that it was a large predator, but it incorrectly suggests a close relationship. It belonged to a different theropod branch and had its own skull and tooth anatomy. Comparisons in ecological scale should not be confused with classification.

It is not possible to rank Carcharodontosaurus confidently as larger or heavier than Tyrannosaurus, Giganotosaurus or Spinosaurus. Each comparison uses incomplete fossils and different estimation methods. The genus certainly ranks among the largest known predatory dinosaurs, but a precise champion title overstates the evidence.

Finally, “shark-toothed” describes tooth shape and does not mean that the animal lived in water. Nor can every isolated tooth from the Sahara be assigned to C. saharicus. Several similar predators lived in North Africa, and a robust identification often requires more diagnostic bones than a single crown.

Carcharodontosaurus saharicus remains a major North African predator, but its reliable anatomy rests chiefly on a partial Moroccan skull. The loss of the original Algerian teeth, the destruction of Stromer’s Egyptian skeleton and the later recognition of other genera all changed how the fossil record is interpreted. Careful separation of the neotype, referred material and disputed species gives a more accurate picture than a single complete-looking reconstruction.