Ferre, Bruno; Walter, Simone; Bengtson, Peter (2005): Roveacrinids in mid-Cretaceous biostratigraphy of the Sergipe Basin, northeastern Brazil. Elsevier, Oxford, United Kingdom, In: Bengtson, Peter (editor), Mesozoic palaeontology and stratigraphy of South America and the South Atlantic; introduction to Part II, 19 (3), 259-272, georefid:2008-090738