allowing it to be held straight and possibly used as a counterweight during locomotion

The sail was connected to the vertebrae and was covered in a layer of skin and muscle

about 115-108 million years ago

prehistoric version of the millipedes we know today

In addition to its ornate head

Psittacosaurus protegiendo puesta Amargasaurus allowing it to be heldThe Psittacosaurus is a genus of herbivorous dinosaur that lived during the early Cretaceous period, approximately 100 to 130 million years ago. It was an ornithischian dinosaur that belonged to the ceratopsid group, although it is often considered an early relative of the better known ceratopsians, such as Triceratops. Here is a description of the Psittacosaurus: Size and Appearance: Psittacosaurus was relatively small compared to other dinosaurs,