Duplipecten devinctus (Suter, 1917)
SUTER, H. 1917. Descriptions of new Tertiary Mollusca occurring in New Zealand, accompanied by a few notes on necessary changes in nomenclature. Part I. New Zealand Geological Survey, Paleontological Bulletin, 5: 1-93, pls. 1-13. [p. 69, pl. 7, fig. 14 ]
1917 Pecten (Chlamys, Aequipecten) devinctus Suter, 1917
H. Suter, 1917, plate 7.
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«Shell of medium size, rather thin, orbicular, very little inflated, equilateral, with radial, not dichotomous smooth ribs, separated by narrow interstices. Ears: The anterior ear of the holotype, a right valve, is broken off, the posterior ear is fairly large, triangular. Beaks approximate, depressed obtuse. Anterior and posterior ends semicircular, the dorsal margins slightly concave, descending, forming at the beak an angle of about 110°. Sculpture consisting of 22 smooth, flatly rounded radial ribs, slightly angled at the sides, the interstices deep and about half the width of the ribs; the whole surface ornamented by microscopic concentric fine lineation, and besides this there is Camptonectes striation present; the posterior ear shows this same minute sculpture, and there are 2 distinct radial riblets besides a few obsolete ones. Colour well preserved in this specimen, consisting of dark-brown and white concentric bands of various width. Interior lirate towards the edges of the valves. Margins sharp, denticulate. Hinge-plate with fine cardinal crura, the auricular crura wanting. Resilifer vertical, triangular, small. Adductor-scar large, oval, high up and behind the vertical mesial line.
Height, 37 mm.; length, 38 mm.; diameter of single valve, 5 mm. (holotype). Holotype in the collection of the New Zealand Geological Survey. Loc.— Waihao greensands, above and below Waihao Downs, South Canterbury: J. A. Thomson, 1913. Apparently rare.—Miocene.» HENRY SUTER, 1917
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