Scientists found a mysterious mark inside a 236-million-year-old fossil in Argentina that may reveal ancient mammal relatives gave birth instead of laying eggs
[ad_1] Reconstructed Triassic landscape at the Museum am Löwentor, Stuttgart (Germany), with Chiniquodon theotonicus (left), Batrachotomus kupferzellensis (right), and, poorly visible in the foreground below the water table, a large temnospondyl. Image Credit: Ghedoghedo/Wikipedia A 236-million-year-old fossil from Argentina may have provided the earliest evidence yet that an animal on the evolutionary lineage leading to…