@article{kellner_aguirre-urreta_ramos_2003,  title={On the pterosaur remains from the Río Belgrano formation (Barremian), Patagonian Andes of Argentina},  volume={75},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652003000400007},  DOI={10.1590/S0001-37652003000400007},  number={4},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Kellner, Alexander W.A. and Aguirre-Urreta, María B. and Ramos, Victor A.},  year={2003},  month={Dec},  pages={487–495} }