Pristonychus 🔍

Pristonychus is a genus of extinct mammals from the Late Triassic period, which spanned approximately 265 million years ago. It's known for its distinctive tooth structure and morphology, including a unique mandible that has an elongated "crown" or crown-like ridge on the top part of the jawbone. Pristonychus is considered to be one of the most poorly preserved animals in the class Cetacea (sea mammals).