A Mesozoic myth: Dinosaurs didn't rule the Earth like we think
Dinosaurs once dominated the ecosystem, leaving early mammals in a subordinate role, while new fossil studies reveal complex interactions between them and their environment.
The breakup of Pangaea contributed to the end-Triassic mass extinction by releasing CO2 that caused global warming and ocean acidification, inhibiting marine life calcification.
Australia's spiky, shuffling, egg-laying echidna evolved in extremely rare' event, scientists say
Echidnas and another Australian oddityâthe semi-aquatic platypusâare believed to have evolved from a common ancestor called Kryoryctes cadburyi that lived in Australia more than 100m years ago.