Dimetrodon (D

which had a flexible tail

Tlatolophus galorum is a sauropod dinosaur belonging to the hadrosaur group

and the arrival of the first humans in the Americas

Baby Yingliang, el embrión de Oviraptor Gorgosaurus Dimetrodon (DIt is very rare to find an embryo in a good state of preservation, however in 2022, a fossilized oviraptosaurus embryo called Baby Yingliang was discovered in China, found in a state of excellent preservation. Oviraptors were toothless, beaked, and feathered dinosaurs that resembled a mix between a bird and a reptile. These dinosaurs, sometimes called "chickensaurs," even hatched their eggs. The fossilization of Baby Yingliang is notable because most