Carnovorosaurus

Carnovorosaurus was a large Hadrosaur species that lived in what is now Kansas. It was among the few Hadrosaur adapted for swimming and it was the only carnivorous Hadrosaur, having hundreds of sharp teeth designed for hunting small animals such as fish, small invertebrates, small birds, and among other small animals. They also had no stiff rods in its tail so it could swim perfectly, and its tail was also paddle-shaped so it could could swim fast. It also had webbings between its toes to steer while swimming. Its natural predators and rivals were possibly Mosasaurs. They might had went extinct due to the mass extinction by an asteroid impact and its impacts.