@article{tamrat_ernesto_2006,  title={Paleomagnetic constraints on the age of the Botucatu Formation in Rio Grande do Sul, southern Brazil},  volume={78},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652006000300016},  DOI={10.1590/S0001-37652006000300016},  number={3},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Tamrat, Endale and Ernesto, Marcia},  year={2006},  month={Sep},  pages={591–605} }