were imposing with their shield-like shells providing protection as they moved gracefully through the water

similar to the appearance of a rhinoceros

Silesaurus opoliensis is believed to have been quadrupedal and probably spent most of its time on land

The Pachycephalosaurus's habitat was mainly in North America

where the first fossil remains were discovered

Edaphosaurus pogonias Paleógeno were imposing with their shield-likeThe Edaphosaurus pogonias was a fascinating creature that inhabited the Earth during the Permian period, around 299 to 272 million years ago. It was a terrestrial reptile belonging to the pelycosaur group, characterized by its large size and a distinctive feature: a tall sail on its back. This sail was the result of a series of elongated bony structures that projected from the vertebrae and were covered by skin. Although its exact function is unknown,