New analysis of the fossil record shows that placental mammals, the group that today includes nearly 5000 species including humans, became more varied in anatomy during the Paleocene epoch – the 10 million years immediately following the event.
Nearly 100 fossil species pulled from a flooded cave in the Bahamas reveal a true story of persistence against all odds -- at least until the time humans stepped foot on the islands.
Researchers know dinosaurs once ruled the earth, but they know very little about how these animals performed the basic task of balancing their energy intake and output--how their metabolisms worked.
Chemical clues about weaning age embedded in the tusks of juvenile Siberian woolly mammoths suggest that hunting, rather than climate change, was the primary cause of the elephant-like animal's extinction.
An international team of researchers, together with participation from the University of Bonn, has investigated a stunning fossil finding from the Cretaceous period.