Geosternbergia was a pterosaur, a type of flying reptile. It was not a dinosaur, though it lived during the same period.
All these Geosternbergia pictures were collected from the internet. Enjoy and explore:
- A. W. A. Kellner. 2010. Comments on the Pteranodontidae (Pterosauria, Pterodactyloidea) with a description of two new species. Anais da Academia Brasileira de Ciências 82(4):1063-1084