Archaeopteryx
Archaeopteryx is the oldest Jurassic period feathered dinosaur. With its blend of avian and reptilian features, it was long viewed as the earliest known bird. It wandered through Germany airspace about 150-145 million years ago. It was the most primitive transitional specimen between non-avian dinosaurs and modern birds. The Archaeopteryx resembled dinosaur and bird bio-typology in equal measure. Its size was estimated at 60 centimetres from a beak to the end of a tail and 500-1000 grams weight. Archaeopteryx brain volume studies revealed that it was thrice as much as contemporary reptiles’ brain volume and equal to the modern birds’ brain size.
