Valentine, James W. «Suppressed Speciation Rates and Compositional Changes in Paleozoic Faunas». Spanish Journal of Palaeontology 8, no. 3 (agosto 11, 2022): 21–25. Accedido noviembre 22, 2024. https://turia.uv.es/index.php/sjpalaeontology/article/view/24654.