@article{chiglino_gaucher_sial_ferreira_2015,  title={Acritarchs of the Ediacaran Frecheirinha Formation, Ubajara Group, Northeastern Brazil},  volume={87},  ISSN={0001-3765},  url={https://doi.org/10.1590/0001-3765201520140430},  DOI={10.1590/0001-3765201520140430},  number={2},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Chiglino, Leticia and Gaucher, Claudio and Sial, Alcides N. and Ferreira, Valderez P.},  year={2015},  month={Apr},  pages={635–649} }