APPENDIX 12 in Shallow-water Rissoidae of the genera Alvania Risso 1826 Haurakia Iredale 1915 Parashiela Laseron 1956 Simulamerelina Ponder 1985 and Subestea Cotton 1944 Gastropoda Caenogastropoda Rissooidea from French Polynesia with the description of a new deep-water genus
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APPENDIX 12. — Measurements of teleoconch and protoconch of Parashiela obesula n. sp. in mm, with range,mean and standard deviation: 1, holotype, Australes, South coast of Rurutu 520-950 m; 2, 3, paratypes, Australes, South coast of Rurutu 520-950 m.
Teleoconch123Min-maxMeanStdHeight1.321.231.071.07- 1.321.210.127Width0.880.880.750.75-0.880.840.075Height/Width ratio1.501.401.431.40-1.501.440.053Aperture height0.580.570.450.45-0.580.530.072Height/aperture height ratio2.282.162.382.16-2.382.270.110No. whorls3.152.902.902.90-3.152.980.144No. axial ribs on last whorls37384137-4138.72.08No. spiral cords on first whorls111110Protoconch123Min-maxMeanStdHeight0.2000.1750.2000.175-0.2000.1920.014Diameter of nucleus0.0630.0870.0750.063-0.0870.0750.012Diameter of first half whorl0.1370.1500.1370.137-0.1500.1410.008Maximun diameter0.2500.2370.2250.225-0.2500.2370.013No. whorls1.351.401.351.35-1.401.370.029Mulstispiralyesyesyesyesyes–
创建时间:
2025-04-05



