Its anatomy presents a fascinating mix of both avian and dinosaurian characteristics

Archeopteryx is one of the most important fossils in evolutionary history

their lineage gave rise to other

A Sarcosuchus imperator

and its extinction coincides with the arrival of the first humans in Australia

Miragaia longicollum Giganotosaurus Its anatomy presents a fascinatingMiragaia longicollum is a genus of stegosaurid dinosaur that inhabited the Upper Jurassic, approximately 150 million years ago, in what is now Portugal. It is mainly notable for its extremely long neck, unusual in stegosaurs, which is often compared to that of some sauropods, the large long necked dinosaurs. This anatomical feature allows Miragaia to occupy a different ecological niche than other stegosaurs. Anatomical and Morphological