Gordon, C.A., Hood, A.R. and Ellis, J.R. 2016. Descriptions and revised key to the eggcases of the skates (Rajiformes: Rajidae) and catsharks (Carcharhiniformes: Scyliorhinidae) of the British Isles. Zootaxa. 4150, 3 (Aug. 2016), 255–280. DOI:https://doi.org/10.11646/zootaxa.4150.3.2.