de Oliveira, Gustavo Ribeiro, and Alexander Wilhelm Armin Kellner. 2007. “A New Side-Necked Turtle (Pleurodira, Pelomedusoides) from the Santana Formation (Early Cretaceous), Araripe Basin, Northeastern Brazil”. Zootaxa 1425 (1). Auckland, New Zealand:53–61. https://doi.org/10.11646/zootaxa.1425.1.7.