Reviewing birth data of 140 placental mammalian species, researchers find that male fetuses are difficult to birth due to being heavier and larger in size compared to female fetuses and the size difference may contribute to difficult birth associated with male fetuses

T. rex not as smart as previously claimed, scientists find

Giant dwarf crocodiles from the Miocene of Kenya and crocodylid faunal dynamics in the late Cenozoic of East Africa

Neanderthal Eustachian Tube: Insights on Disease Susceptibility and Extinction