Murex martinianus Pfeiffer, 1840 Murex pinnatus Swainson, 1822 Pterynotus pinnatus (Swainson, 1822) Purpura alata Röding, 1798 Pterynotus alatus is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.

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