 A limited fauna is known from the upper section of the Oldman Formation , and Corythosaurus casuarius as well as C. intermedius are among the taxa . Also from the section of the formation are the theropods Daspletosaurus , and <unk> , the hadrosaurids Brachylophosaurus , Gryposaurus and Parasaurolophus , and the <unk> Scolosaurus , and the ceratopsians <unk> and Chasmosaurus . Other genera are known , but do not persist from the upper section of the formation , and therefore are not contemporaries of Corythosaurus . 
