Compagno, L.J.V. (1999)
An overview of chondrichthyan systematics and biodiversity in southern Africa. Transactions of the Royal Society of South Africa, 54, 75–120
DOI: 10.1080/00359199909520406

Soares, K.D.A. & Toledo-Piza, M.N. (2021)
Branching patterns of the afferent branchial arteries and their phylogenetic significance in rays (Batoidea). Scientific Reports, 11, Article 23236
DOI: 10.1038/s41598-021-02145-x