Ipunina, a new genus perhaps of Litiopidae (lower Caenogastropoda), from the Neogene of southern Chile
1 Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Ludewig-Meyn-Str. 10, 24118 Kiel, Germany; and 2Museo Nacional de Historia Natural, Casilla 787, Santiago, Chile
Correspondence: S.N. Nielsen; e-mail: nielsen{at}gpi.uni-kiel.de
| Abstract |
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A new genus and species of lower caenogastropod, Ipunina vladimiri, is described from Neogene sediments of the islands Chiloé and Ipún, southern Chile. Ipunina has a protoconch with strong axial ribs on the upper side and a pattern of boxes on the periphery of the whorls, and a thin-shelled bucciniform teleoconch with strong spiral cords. Neither larval nor adult shell-morphology completely resolves the systematic placement. Affinities with Litiopidae, Planaxidae and Provannidae are discussed and placement in Litiopidae is favoured based on protoconch sculpture. This is the first record of Litiopidae from the Neogene of south-western South America.
(Received 23 October 2007; accepted 28 March 2008)