Blooming of March Spring. First of the giants

Around 210 MYA, a new type of dinosaur emerged - the giant herbivore, plateosaurus ("flat lizard"). Weighing around 3 tonnes and growing up to 7 metres, plateosarus was a forerunner of the huge Jurassic dinosaurs. It had a long, powerful tail and a set of coarsely serrated teeth for chewing tough vegetation. plateosaurus also had a large, curved claw on its thumb. We're not sure whether this was used for food collection or defence.
Large numbers of plateosaurus skeletons have been found in the same location, suggesting they may have herded. Alternatively, instinct drew them to the same place to die.