Name: Jack Horner: Dinosauri promjenjivog izgleda
Uploaded: 2012-02-09T15:59:58Z
Duration: 18 min 6 s
Description: Gdje su dinosauri bebe? U očaravajućem govoru s TEDxVancouvera paleontolog Jack Horner opisuje kako je otvaranje lubanja fosila otkrilo šokantnu tajnu o nekima od naših voljenih dinosaura.

Gdje su dinosauri bebe? U očaravajućem govoru s TEDxVancouvera paleontolog Jack Horner opisuje kako je otvaranje lubanja fosila otkrilo šokantnu tajnu o nekima od naših voljenih dinosaura.

Jack Horner: Dinosauri promjenjivog izgleda

Many classic dinosaur species are actually just the young or adolescent forms of others, mistaken for adults because of dramatic changes as they grew. Museums collected only the biggest fossils, so baby dinosaurs seemed to vanish. Bone analysis reveals that some dinosaurs, like Triceratops and Pachycephalosaurus, were mislabeled as multiple separate species when they were really just growth stages of the same animal. This discovery rewrites the dinosaur family tree and shrinks the cast of prehistoric giants.