Among dinosaurs there were flying species, for example, rhamphorhynchus – toothy reptiles with long tail, vane from skin and hollow bones. They reached 1.26 m in length and 1.81 m in wingspan, wherein their mass was small, thanks to hollow bones. Rhamphorhynchus lived on Earth in Jurassic Period 170 – 140 millions of years ago; hunted on fishes and insects ( their forward-looking teeth were adapted for hunting on them ) and during flying held their heads parallel to the ground.
Currently there are no exact data on whether they were warm or cold blooded; soon after hatching from eggs they were able to fly and reached adult sizes by age of 2 – 3 years. They were able to live in nocturnal lifestyle, but there are also no exact information about this; they were hunted by other animals, for example, were found skeletons of flying reptile and large fish, which tangled in skin membranes of reptile, they drowned together and went to the bottom, where they were covered by the silt and preserved in such state for hundreds of millions of years up to ours days. Fossils of Rhamphorhynchus were found in Europe and Northern Africa, the most well-preserved and complete ones were found in Bavaria Germany. Their skeletons were described for the first time in 1825 year by collector Georg Graf zu Münster and scientists Samuel Thomas von Soemmerring and Georg August Goldfuss.