Pistosaurs

Pistosaurs are a group of extinct, herbivorous dinosaurs that lived during the Late Cretaceous period, approximately 99 to 93 million years ago. They are known from the fossil record of North America and Europe. Pistosaurs are characterized by their distinctive, paddle-like limbs, which were adapted for a semi-aquatic lifestyle. Their forelimbs were longer than their hindlimbs, and both sets of limbs ended in four-fingered hands and feet with long, curved claws.

The most well-known pistosaur is Plesiosaurus, a genus that includes several species. Plesiosaurus was a large dinosaur, with some species reaching lengths of up to 12 meters. It had a long, narrow snout filled with sharp teeth, which it used to crush the shells of its prey. Plesiosaurus is also known for its distinctive, paddle-like limbs, which were adapted for swimming and wading in shallow water.

Pistosaurs are believed to have been semi-aquatic dinosaurs that lived in coastal regions and near bodies of water. They are thought to have fed on a variety of prey, including fish, crustaceans, and small dinosaurs. Pistosaurs are an important part of the dinosaur fossil record, as they provide insight into the diversity of dinosaur lifestyles and adaptations during the Late Cretaceous period.