Pagodula echinata
Pagodula echinata is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Synonyms
Fusus echinatus Kiener, 1840Pagodula carinata sensu Monterosato, 1884 Pagodula carinata var. cinara Monterosato, 1884Pagodula carinata var. tenuis Monterosato, 1884Trophon carinatus Jeffreys, 1883Trophon carinatus var. cinara Monterosato, 1884Trophon carinatus var. depressa Locard, 1897
Trophon carinatus var. elongata Locard, 1897Trophon carinatus var. major Locard, 1897Trophon carinatus var. mutica Locard, 1897Trophon carinatus var. spinosa Locard, 1897Trophon carinatus var. tenuis Monterosato, 1884Trophon echinatus Trophon grimaldii Dautzenberg & Fischer, 1896Trophon multilamellosus auct. Trophon vaginatus auct. Trophonopsis carinata aculeata Settepassi, 1977 Trophonopsis carinata hirta Settepassi, 1977 Trophonopsis carinata multiaculeata Settepassi, 1977 Trophonopsis carinatus aculeatus Settepassi, 1977Trophonopsis carinatus hirtus Settepassi, 1977Trophonopsis carinatus multiaculeatus Settepassi, 1977Trophonopsis carinatus var. depressa Locard, 1897Trophonopsis carinatus var. elongata Locard, 1897 Trophonopsis carinatus var. major Locard, 1897 Trophonopsis carinatus var. 'mutica' Locard, 1897Trophonopsis carinatus var. spinosa Locard, 1897Trophonopsis varicosissimus var. major Locard, 1897
Taxonomy
The names Trophon carinatus and Trophon vaginatus, established for fossils, have been used during much of the 19th and 20th century to designate the Recent species now validly known as Pagodula echinata.Description
The hyaline, white shell has a fusiformshape. Its length measures up to 25 mm but generally no more than 15 mm. The small protoconch is smooth and consists of little more than one whorl. The teleoconch contains 6-7 whorls bearing a very strong median keel and delicate, foliated varixes forming elongated projections at their intersection with the keel. There is no other spiral sculpture is present. The outer lip simple, with a peripheral projection terminating the keel. The siphonal canal is long and delicate, widely open.The taxonomy of deep-water forms related to this species is unsettled ; some of these correspond to the nominal species Pagodula cossmani which differs in lacking long projections along the shoulder which is not so pronounced, and in having spiral cords below the shoulder in a pattern recalling Trophonopsis barvicensis.