Paul, Christopher R.C., y Juan Carlos Gutiérrez-Marcos. «Pentaradiate Diploporites (Echinodermata) from the Spanish Middle Ordovician and Their Taxonomic Significance». Spanish Journal of Palaeontology 37, no. 2 (diciembre 29, 2022): 153–176. Accedido diciembre 4, 2024. https://turia.uv.es/index.php/sjpalaeontology/article/view/25498.