326K views · 10K reactions | This is a brilliant Triceratops growth series, although in reverse, from huge to tiny! Having multiple specimens like this enables palaeontologists to study and attempt to understand ontogeny, i.e. how animals develop and change with age. Baby dinosaurs are among the rarest dino fossils. Hmm. But, can you spot a Torosaurus hiding in there, too  This display is at the Museum of the Rockies. | Dr Dean Lomax - Palaeontologist | Facebook