What structures divide cetacean into two suborders?

Cetaceans are divided into two suborders: Mysticeti (baleen whales) and Odontoceti (toothed whales) based on their feeding structures. Mysticeti possess baleen plates that filter food from the water, while Odontoceti have teeth that allow them to grasp and consume larger prey. These anatomical differences reflect their distinct feeding strategies and ecological roles in marine environments.