a paleogeographically unique region because during the Late Cretaceous it was part of a large island system within the Tethys Ocean

indicating that the dinosaur's brain was already active before birth

Lisowicia bojani is considered one of the largest land reptiles of its time

Utahraptor hatchlings were significantly smaller than adults

which lived during the Late Jurassic period

Purussaurus brasiliensis Alaskacephale a paleogeographically unique region becausePurussaurus brasiliensis fue un gigantesco caimn prehistrico que vivi durante el Mioceno, hace aproximadamente 8 a 5 millones de aos, en lo que hoy es Amrica del Sur. Perteneciente a la familia Alligatoridae, este reptil dominaba los ecosistemas acuticos de la regin amaznica, donde comparta su hbitat con una diversa megafauna, incluyendo tortugas gigantes, peces de gran tamao y mamferos como los ungulados sudamericanos y los perezosos terrestres. Es