los amonites se han extinguido y solo se conocen a través de sus fósiles

Velociraptor mongoliensis was plumaged

Scale 1:20 - 115 mm

or poikilothermic

Acrocanthosaurus atokensis Acrocanthosaurus los amonites se han extinguidoAcrocanthosaurus atokensis is the only known species of the extinct genus Acrocanthosaurus, a carcharodontosaurid theropod dinosaur that inhabited North America during the Cretaceous period, approximately 125 to 99. 6 million years ago. It stands out for the tall neural spines on many of its vertebrae, which suggest the presence of a kind of "hump" on its neck, back and hips. It was one of the largest theropods, with a length of up to 11. 5 meters and