Wooden PlesiosaurusPlesiosaurs first appeared in the latest Triassic Period, about 203 million years ago. They had a broad flat body and short tail. Their limbs had evolved into four long flippers, which were powered by strong muscles attached to wide bony plates. The flippers made a flying movement through the water which meant that despite their large size, they were incredibly fast and agile. They breathed air, and birthed live young. These beautiful wooden