50773 Mustelus sinusmexicanus Heemstra, 1997 Triakidae Houndsharks Triakinae Carcharhiniformes Elasmobranchii Gulf smoothhound Western Central Atlantic: apparently endemic to the Gulf of Mexico, from off Panama City, Florida to the Bay of Campeche. FB 2744137 Mustelus sinusmexicanus 91 m GCRL 288 1959 Mustelus sinusmexicanus GCRL 1183 1960 Mustelus sinusmexicanus