Ammonites Majungasaurus approximately 68-66 million years ago

approximately 68-66 million years ago

Width 157 mm

which were the predecessors of modern mammals

and deserts

su dieta exacta aún se debate

Ammonites Majungasaurus approximately 68-66 million years agoAmmonites (Ammonite sp), extinct marine cephalopod molluscs that appeared in the middle of the Paleozoic Era (about 400 Ma ago) in the Lower Devonian and lasted until the Cretaceous Paleogene extinction event, inhabited the oceans for more than 300 million years . They were characterized by their spiral shells and internal chambers, which allowed them to adjust their buoyancy and control their position in the water. The shell was composed mainly of