👉 The term "cetiosauria" refers to a group of dinosaurs belonging to the Late Cretaceous period, which spanned from about 105-98 million years ago. These animals were the first known dinosaur species and are characterized by their large size, powerful jaws, and sharp teeth. Cetidosaurs were primarily herbivores, with some species being carnivorous as well. They lived during a time of rapid climate change and extinction, and many survived to become