Obdurodon
Obdurodon is a large platypus, and, unlike other monotremes, might've been able to eat plants, due to it having molars. They were also extremely large, similar to the giant echidnas Zaglossus hacketti and Zaglossus robustus. Discovered in 1975 by Mike O. Woodburne and Dick H. Tedford at Etudunna...
