First-Ever Egg of a Mammal Ancestor Discovered!
Research by myself, Julien Benoit (Wits) and Vincent Fernandez (ESRF) presents the first-ever egg of the therapsid Lystrosaurus, finally answering the question: Did the ancestors of mammals lay eggs? Yes, they did!
doi.org/10.1371/jour...
Oviparity was likely the plesiomorphic reproductive condition for non-mammalian Synapsida, the stem-mammal group. Yet, despite nearly two centuries of research, no definitive fossil eggs of late Palae...
