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Journal Molluscan Studies Advance Access originally published online on October 16, 2006
Journal of Molluscan Studies 2006 72(4):413-424; doi:10.1093/mollus/eyl020
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© The Author 2006. Published by Oxford University Press on behalf of The Malacological Society of London, all rights reserved

Shell characters and taxonomy of Latirus and related fasciolariid groups

Geerat J. Vermeij1 and Martin Avery Snyder2

1 Department of Geology, University of California at Davis, One Shields Avenue, Davis, CA 95616, USA; and 2 Department of Malacology, Academy of Natural Sciences of Philadelphia, 19th and Benjamin Franklin Parkway, Philadelphia, PA 19103, USA

Correspondence: M.A. Snyder; e-mail: dr.martin.snyder{at}gmail.com

The neogastropod family Fasciolariidae contains a complex of genera related to Latirus Montfort, 1810, many of which have traits unusual for the family. In a taxonomic revision of some of these genera, based on shell characters, we restrict Latirus to a mainly Indo-West Pacific group of Pliocene to Recent species, which closely resemble the middle Miocene to Recent pantropical genus Hemipolygona Rovereto, 1899. Hemipolygona stenomphalus (Habe & Kosuge, 1966) is synonymized with H. recurvirostris (Schubert & Wagner, 1829). Lathyropsis Oostingh, 1939, based on a small Pliocene species from Indonesia, is here tentatively subsumed under Polygona Schumacher, 1817. The latter genus, ranging from the late Oligocene to Recent, occurs mainly in the New World and eastern Atlantic, and contains at least two species groups centered on P. infundibulum Schumacher, 1817 (type of genus) and P. angulatus (Röding, 1798). Taxa assigned by many authors to Latirulus Cossmann, 1889, are here reassigned to the new genus Turrilatirus (type species: Voluta turrita Gmelin, 1791), from the Pliocene to Recent of the Indo-West Pacific. Latirulus is restricted to Eocene species. We assign various early Miocene to Recent species from the western Atlantic and eastern Pacific to the new genus Pustulatirus (type species: Latirus mediamericanus, Hertlein & Strong, 1951a). Taxa formerly assigned to Latirus but here removed from Fasciolariidae include Latirus ewekoroensis Adegoke, 1977; the Eocene Ruscula Casey, 1904; Lathyrus granifer and L. compactilis, both of Martin, 1931; Latirus kirbyi Clark, 1938; Latirus tortilis var. nanafalius Harris, 1899; and Latirus quercotillaensis Olsson, 1931.

(Received 6 September 2005; accepted 29 May 2006)


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