It had a large

allowing it to swing and turn quickly to attack or defend itself

the Dimetrodon was not a high-speed predator

which were neither dinosaurs nor mammals

Ambulocetus natans Carcharodontosaurus It had a largeAmbulocetus natans was an extinct species of mammal that lived during the Eocene period, approximately 49 48 million years ago. The name "Ambulocetus natans" comes from Latin and translates as "walking whale" due to its ability to move both on land and in water. This mammal is an example of the mesonychians, a group of semi aquatic carnivores thought to be related to the ancestors of modern whales. Ambulocetus was characterized as a semi aquatic