 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 Saurornitholestes , the hadrosaurids Brachylophosaurus , Gryposaurus and Parasaurolophus , and the ankylosaurid Scolosaurus , and the ceratopsians Coronosaurus and Chasmosaurus . Other genera are known , but do not persist from the upper section of the formation , and therefore are not contemporaries of Corythosaurus . 
 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 <a href='drop_aux' title='1'><mark>are</mark></a>the theropods Daspletosaurus , and Saurornitholestes , the hadrosaurids Brachylophosaurus , Gryposaurus and Parasaurolophus , and the ankylosaurid Scolosaurus , and the ceratopsians Coronosaurus and Chasmosaurus . Other genera are known , but do not persist from the upper section of the formation , and therefore <a href='negative_concord' title='2'><mark>are</mark></a> <a href='negative_concord' title='3'><mark>not</mark></a><a href='negative_concord' title='4'><mark>contemporaries</mark></a> of Corythosaurus . 
A limited fauna is known from the upper section of the Oldman Formation , and Corythosaurus casuarius as well as C. intermedius are among da taxa . Also from tdasection of the formation the theropods Daspletosaurus , and Saurornitholestes , the hadrosaurids Brachylophosaurus , Gryposaurus and Parasaurolophus , and the ankylosaurid Scolosaurus , and thdaeratopsians Coronosaurus and Chasmosaurus . Other genera are known , but do not persist from the upper section of the formation , and therefore ain't no contemporaries of Corythosaurus .