PERILLI, Nicola. Lower Cretaceous nannofossil biostratigraphy of the Calpionella Limestone and the Palombini Shale in Southern Tuscany (Italy). Spanish Journal of Palaeontology, [S. l.], v. 12, n. 1, p. 1–14, 2022. DOI: 10.7203/sjp.23990. Disponível em: https://pasquin.uv.es/index.php/sjpalaeontology/article/view/23990. Acesso em: 22 feb. 2025.