For a long time, most of us have had the impression mammals first emerged in the late Cretaceous, not long before the asteroid that wiped out the non-avian dinosaurs, 66 million years ago. In reality, as Elsa Panciroli explains here, the line that became mammals, the Synapsida, began their split from reptiles in the late Carboniferous, over 300 million years ago.
Panciroli doesn't just tell us about the mammals, but about women as well as men who did important work in uncovering the fascinating, and longer than we often assume, history of mammals. She also talks about some of the less attractive history of paleontological research, the degree to which racism produced not just imperialistic dismissal of local knowledge and observations, but real crimes. This isn't, however, a politicized history; it's just reporting facts about the history of paleontology that are often ignored.





