Two specimens of the thornback ray, Raja clavata Linnaeus, 1758, from Turkish waters, exhibiting deformities of disc and tail are described in the present paper. One of these specimens had a colour pattern similar to type 7, vermiculated, it could constitute a transitional step between Raja clavata and its close relative species Raja maderensis Lowe, 1838.
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Capapé et al. (2018) studied this question.
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