Current state of knowledge on Xenacanthiformes (Chondrichthyes, Elasmobranchii) from the Taquaral Member, Irati Formation, Permian of the Paraná Basin. SciELO Preprints, 2026. DOI: 10.1590/SciELOPreprints.14832. Disponível em: https://preprints.scielo.org/index.php/scielo/preprint/view/14832. Acesso em: 13 maio. 2026.