Suchomimus has been placed in the middle of the spinosaurs, a group of predators. Apart from the back ridge, Suchomimus was very alike to Baryonyx which also had strong forelimbs and a enormous sickle-curved claw on its "thumb". And, as with Baryonyx, the claw was the first fossil part to be noticed by palaeontologists. Suchomimus was significantly larger than Baryonyx, but the latter might approximately have been a juvenile of the former. Detailed study shows that the specimen of Suchomimus was itself not fully grown when it died.
After discovering new specimens of Carcharodontosaurus and the SuperCroc, Chicago-based palaeontologist Paul Sereno and his team additional a discovery in 1997. In the Sahara, near the Tenere Desert in Niger, they establish fossils that represented about two-thirds of the skeleton of an enormous meat-eater. This was named Suchomimus ("crocodile mimic") after the shape of its head.