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The systematics and reproductive biology of the Galeus arae subspecific complex (Chondrichthyes: Scyliorhinidae). Environmental Biology of Fishes, 57(2), 117–129
DOI: 10.1023/A:1007600228078
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Galeus springeri, a new species of sawtail catshark from the Caribbean Sea (Chondrichthys, Scyliorhinidae). Copeia, 1998(1), 151–158
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Survey of the variation of alar and malar thorns in skates: phylogenetic implications (Chondrichthyes: Rajoidei). Journal of Morphology, 228(2), 165–178
DOI: 10.1002/(SICI)1097-4687(199605)228:2<165::AID-JMOR5>3.0.CO;2-4