Oenopota pyramidalis, copyright Anders Warén.

Belongs within: Mangeliidae.

Oenopota is a genus of small to moderate-sized conoids found in the Arctic Ocean and northernmost Pacific (Powell 1966).

Characters (from Powell 1966): Shell small to moderate-sized, 10–23 mm, elongate-ovate, with tall spire of rounded whorls and rounded body-whorl, tapered to short spout-like canal, which is flattened at its extremity but scarcely emarginate. Protoconch narrowly papillate of about 2–2.5 whorls, initially smooth, then developing three spiral cords crossed by spaced axials, enclosing squarish interspaces. Adult sculpture of strong rounded slightly oblique axials, extending from suture to suture and over most of base, overridden by numerous spiral cords. Outer lip with broad shallowly arcuate subsutural sinus. Periostracum thin, pale brownish. Radula consisting of pair of marginals of hilted dagger type, each with conspicuous basal spur.

<==Oenopota Mörch 1852 P66
    |  i. s.: O. harpa (Dall 1885) P66
    |         O. uschakovi Bogdanov 1985 BK11
    |--O. (Oenopota) P66
    |    |--O. (O.) pyramidalis (Ström 1788) P66 (see below for synonymy)
    |    |--O. (O.) alaskensis (Dall 1871) P66 [=Mangelia alaskensis P66, Lora alaskensis O27]
    |    |--O. (O.) kagana (Yokoyama 1927) [=Bela kagana] P66
    |    |--O. (O.) mortiei MacNeil 1943 P66
    |    |--O. (O.) okudai Habe 1958 P66
    |    |--O. (O.) tayaensis (Nomura & Hatai 1939) [=Lora tayaensis] P66
    |    |--O. (O.) trevellianum (Turton 1834) P66 (see below for synonymy)
    |    `--O. (O.) turrispira Berry 1941 P66
    `--O. (Nodotoma Bartsch 1941) BK11
         |--*Nodotoma’ impressa (Mörch 1869) P66 (see below for synonymy)
         |--‘Nodotoma’ exquisita (Yokoyama 1926) [=Bela exquisita] P66
         |--‘Nodotoma’ kurodai (Onoyama 1938) [=Lora viridula kurodai] P66
         |--‘Nodotoma’ tomiyaensis (Otuka 1949) [=Lora tomiyaensis] P66
         |    |--N. t. tomiyaensis P66
         |    `--N. t. iiokaensis Ozaki 1958 [=Nematoma tomiyaensis iiokaensis] P66
         `--‘Nodotoma’ totomiensis (Makiyama 1931) [=Lora totomiensis] P66

*Nodotoma’ impressa (Mörch 1869) P66 [=Pleurotoma (Bela) impressa P66, Lora impressa O27, P. (Ischnula) impressa P66]

Oenopota (Oenopota) pyramidalis (Ström 1788) P66 [=Buccinum pyramidale P66; incl. Fusus pleurotomarius Couthouy 1838 P66, Lora pleurotomaria D19, *Oenopota pleurotomaria P66, Pleurotoma pleurotomaria D19]

Oenopota (Oenopota) trevellianum (Turton 1834) P66 [=Pleurotoma trevellianum P66, Lora trevelliana O27, Mangilia trevelliana O27]

*Type species of generic name indicated


[BK11] Bouchet, P., Y. I. Kantor, A. Sysoev & N. Puillandre. 2011. A new operational classification of the Conoidea (Gastropoda). Journal of Molluscan Studies 77: 273–308.

[D19] Dall, W. H. 1919. Descriptions of new species of mollusks of the family Turritidae from the west coast of America and adjacent regions. Proceedings of the United States National Museum 56 (2288): 1–86, pls 1–24.

[O27] Oldroyd, I. S. 1927. The Marine Shells of the West Coast of North America vol. II pt I. Stanford University Press: Stanford University (California).

[P66] Powell, A. W. B. 1966. The molluscan families Speightiidae and Turridae: an evaluation of the valid taxa, both Recent and fossil, with lists of characteristic species. Bulletin of the Auckland Institute and Museum 5: 1–184, pls 1–23.

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