👉 Protorosaurus was a genus of dinosaur that lived during the Late Cretaceous period, around 105-98 million years ago. They were characterized by their large size and lengthened necks, which made them appear larger than their actual size. The protorosaurs had an elongated, tubular body with four limbs, a single tail, and a large jaw. The scientific name "Protorosaurus" is derived from the Greek words "protaros"