Olgusoids

Olgusoids are a group of extinct marine reptiles that lived during the Late Triassic period, approximately 230 to 200 million years ago. They are characterized by their elongated, snake-like bodies and the presence of a unique, elongated neck that was often used for hunting. Olgusoids are believed to have been semi-aquatic, with their bodies adapted for both swimming and walking on land.

The most well-known member of the Olgusoids is the Olgosaurus, a large marine reptile that could grow up to 10 meters in length. Other notable members include the Erythrosuchus and the Tanystropheus. These reptiles are thought to have been active predators, feeding on a variety of marine creatures.

Olgusoids are classified within the order Erythrosuchia, which also includes the more famous marine reptiles such as ichthyosaurs and plesiosaurs. However, unlike these latter groups, Olgusoids are not believed to have given rise to any living descendants. Their fossils are primarily found in Europe and North America, providing valuable insights into the diversity and adaptations of marine reptiles during the Mesozoic era.