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Walsh, J.H. and Ebert, D.A. 2007.

A review of the systematics of western North Pacific angel sharks, genus Squatina, with redescriptions of Squatina formosa, S. japonica, and S. nebulosa  (Chondrichthyes: Squatiniformes, Squatinidae)

. Zootaxa. 1551, 1 (Aug. 2007), 31–47. DOI:https://doi.org/10.11646/zootaxa.1551.1.2.