 Having discovered the skull, jaw and neck fossils of a 95-million-year-old theropod in the Elrhaz Formation of Niger in 1997, Sereno was looking for a competent student to analyse it.Brusatte took the opportunity in 2004, completed the project in 2005, and published his findings in 2007 with Sereno.The animal was found to be a new species of "Carcharodontosaurus", which they named "C. iguidensis".