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Species / Struthioptera Campiveta

Struthioptera Campiveta

Stromboidea


Original description of Struthioptera campiveta by Stilwell, 2003:

  • "Shell small-sized for genus (slightly less than 20 mm high), moderately thin-shelled and scarcely robust in most specimens, moderately alate, low-turreted; spire moderately low with at least six shouldered whorls; whorl inflation rare fairly constant until last whorl; pire angle acute, just under 45°; protoconch obtusely conical to dome-shaped at tip of nucleus, paucispiral, of 2–3 smooth, rounded whorls, spiral ornament appearing by third–fourth whorl; sutures impressed; growth lines very weakly developed, more opisthocyrt on sutural ramp, becoming more prosocyrt on shoulder; shoulder ramp very steep, nearly straight, becoming slightly concave at base near inception of nodes; basal constriction strong; hell strongly ornamented with marked tubercles and much weaker spiral ornamentation; last whorl biangulate with stronger angulation at periphery of shell, and weaker one abapically; last whorl ornamented with about 7–8 very sharply projecting nodes, not axially extending, excavated between each other, keel extending to end of strongly alate digitation as a strong rib, and lower less developed keel with only slight swellings, aligned with growth lines, keel also extends to the end of the digitation, but is weaker cord; last whorl with approximately 30, mostly evenly spaced, slightly wrinkled, wavy, spiral cords, some of which with secondary threads; penultimate and older teleoconch whorls with 7–8 sharp tubercles positioned low abapically just above line of suture and some 13 spirals with one emerging from suture; spirals broaden slightly on wing; aperture long, moderately narrow, sublenticular, with moderately short siphonal canal; outer lip relatively thin, projecting into moderately broad and inclined wing, with upturned, distally pointed end, adapically."

Locus typicus: Marlborough, South Island, New Zealand.

Stratum typicum: Lookout Volcanics and Bluff Sandstone, Ngaterian–Arowhanan Stages, early–late Cenomanian, upper Cretaceous

Etymology: Species name in honour and memory of J. D. Campbell and the Latin vetus (equivalent to “old”) for its oldest presently known occurrence in the early Late Cretaceous of New Zealand.

References:

  • Stilwell J.D. (2003) - Diversity, distribution, and evolutionary history of the Austral, Late Cretaceous to Eocene, gastropod Struthioptera (Stromboidea: Aporrhaidae). Journal of the Royal Society of New Zealand 33 (1) 315-340

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