DOCODON

extinct genus of primitive mammals known only from fossilized teeth found in European deposits of the Late Jurassic (i.e., those 144 to 163 million years old). The dentition patterns of the cusps and other molar structures are complex and distinct. Although it is uncertain whether Docodon is related to any modern mammals, it has been suggested that the genus may be close to that of the monotremes, the modern platypus and spiny anteater.