In the Cretaceous period, we could have fished in the Prairies and caught the same kinds of fish we’d catch today: cartilaginous fish, primitive bony fish and modern bony fish. These kinds of fish all appeared before the Cretaceous period.

Cartilaginous fish were the first fish to appear and the first vertebrates to develop a jaw. They included rays, chimaeras and sharks. Because of their cartilaginous skeleton, complete fossilized specimens are extremely rare. Shark teeth, however, are often discovered in sedimentary rock.
Canadian Heritage Information Network
Canadian Heritage Information Network, Canadian Museum of Nature, Musée du Séminaire de Sherbrooke, Royal Tyrrell Museum

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