👉 Cetiosaurian, also known as a sauropod dinosaur, is an extinct group of birds and reptiles that lived during the Late Cretaceous period (around 68 to 64 million years ago). They were found in the northern part of Europe. The cetiosaurian was one of the largest land animals ever known, standing at up to 10 meters long and weighing around 25-30 tons. The cetiosaurians had a distinctive