Triceratops prorsus munches on cycads and disturbs primitive cousins of placental (left) and marsupial (right) mammals in the underbrush. A softshell turtle climbs up on a log, unaware that its ...
Scientists still debate the purpose of this dinosaur's iconic horns and spiky head plate. Find out what we’ve learned about how Triceratops lived and why it went extinct. Triceratops’ enormous ...