"IUCN3.1" . . . . . . . "The gulf smooth-hound (Mustelus sinusmexicanus) is a houndshark of the family Triakidae, found on the continental shelves of the tropical western central Atlantic. The reproduction of this houndshark is placental viviparous."@en . . . . . "Gulf smooth-hound"@en . . "DD" .