Carcharodontosaurids are a group of large, carnivorous dinosaurs that lived during the Late Jurassic to Early Cretaceous periods. They are known for their impressive size, with some species reaching lengths of over 40 feet. These dinosaurs had sharp teeth and strong jaws, making them effective predators. Fossils of carcharodontosaurids have been found in various parts of the world, including Africa and South America. They are closely related to other theropods, such as Allosaurus and Tyrannosaurus rex, and are part of the larger group known as carnivorous dinosaurs.