Studies on the head skeleton of Rhinobatus halavi, Rhynchobatus djiddensis and Trygon kuhlii. Publications of the Marine Biological Station of Al–Ghardaqa, 10, 3–40
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The development of the chondrocranium of the spiny dogfish, Acanthias vulgaris (Squalus acanthias). Part II: Branchial arches and extravisceral cartilages. Journal of Morphology, 90(1), 33–64
DOI: 10.1002/jmor.1050900103
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The development of the chondrocranium of the spiny dogfish, Acanthias vulgaris (Squalus acanthias). Part I. Neurocranium, mandibular and hyoid arches. Journal of Morphology, 84(2), 227–279
DOI: 10.1002/jmor.1050840204
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The development of the spiracular cartilages of the spiny dogfish, Acanthias vulgaris (Squalus acanthias). Biological Bulletin, 93(2), 287–295