Onchopristis river

The Onchopristis river was a river that a shoal of Onchopristis use to travel to their spawning grounds.

Lost World
A Spinosaurus came to the river to fish for Onchopristis. As it successfully caught and fed on many of the Onchopristis, a Rugops came and fed on the scraps. After catching a sufficient amount of food, the Spinosaurus swam down the river.