Kelliola symmetros

• Main Author: Oliver, P. Graham
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Galeommatida; Lasaeidae; Kelliola; Kelliola symmetros; Davis Strait; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.3858678; http://treatment.plazi.org/id/546087F47C5EFFEC877320C4FD79F9FF

Kelliola symmetros (Jeffreys, 1876) Kellia symmetros Jeffreys, 1876: 491. Kellia ( Kelliola ) symmetros – Dall 1899: 890. ? Kellia symmetros – Friele & Grieg 1901: 29. Axinodon symmetros – Warén 1980: 47. Not Kellia symmetros – Locard 1898: 297, pl.XIII, figs 18-20. Not Axinodon symmetros – Bouchet & Warén 1979: 216-217, figs 3A-D. — Aartsen 1996: 30, fig. 5 (is Axinodon ellipticus Verrill & Bush, 1898). Not Montacuta ( Axinodon ) symmetros – Gage, Billett, Jensen & Tyler 1985: 189. Not Axinodon sp.1 – Olabarria 2005: 20 (is Mysella sp.) Material examined Holotype 1 shell, North Atlantic, SW of Godthaab, Davis Strait, Valorous stn 9, 59˚10'N 50˚25'W, 1750 fathoms (3202 m), United States National Museum- USNM170626. Other material 2 specimens, attached to Aeropsis rostrata , Bay of Biscay, Shackleton cruise 1977/5, stn D7, 47˚29.7'N 09˚33.3'W, 4250-4265 m, 30 Apr. 1977, leg. E. Southward, National Museum Wales, Zoology- NMW.Z. 2012.015.1; 4 specimens, attached to Aeropsis rostrata , Bay of Biscay, Shackleton cruise 1977/5, stn D2, 47˚35.52'N 09˚44.07'W, 4120-4165 m, 29 Apr. 1977, leg. E. Southward, National Museum Wales, Zoology- NMW.Z. 2012.015.2. Type locality North Atlantic, Valorous St. 9, SW of Godthaab, Davis Strait, 59°10’N 50°25’W, 1750 fathoms (3202 m). Redescription of the holotype (Fig. 2) Shell minute, length 1.0 mm, height 0.77 mm. Thin, translucent. Equivalve. Weakly inequilateral, beaks just behind the midline. Umbos prominent, beaks orthogyrate. Outline subovate, slightly extended anteriorly; anterior dorsal margin sloping into broadly rounded anterior margin; posterior dorsal margin indistinct sloping into broadly rounded posterior margin, this slightly less expanded than anterior margin; ventral margin weakly curved. Sculpture weak, of indistinct commarginal lines most obvious on lateral margins. Prodissoconch II distinct, 373 μm across, with weak commarginal lines. Hinge plate weak, Ligament short, internal, attached to a shallow resilifer situated beneath and posterior of the ...