References: Klimley, A.P., 2013. The biology of sharks and rays. University of Chicago Press.
Jones, C.J., Walker, T.I., Bell, J.D., Reardon, M.B., Ambrosio, C.E., Almeida, A. and Hamlett, W.C., 2005. Male genital ducts and copulatory appendages in chondrichthyans. Reproductive Biology and Phylogeny of Chondrichthyes: Sharks, Batoids and Chimaeras, ed. WC Hamlett, pp.361-393.
This is a series of little illustrated factoids about animal reproduction, posted daily. I’d love to hear your suggestions/ feedback. I also post these on my insta.