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Species Pecten rudis Sowerby 1846


Discussion / Comments:
Griffin & Nielsen (2008):
TYPE MATERIAL. Holotype of Pecten rudis: NHM-L27688 (Coquimbo). REMARKS. This species is based on a small fragment – the holotype of Pecten rudis – of a disc of a poorly preserved coarsely costate pectinid. The figure (Sowerby, 1846, pl. 3, fig. 32) seems to be a reconstruction of this. According to Philippi (1887, p. 204), this species is similar to Argopecten purpuratus from the Quaternary beds of Coquimbo. This was later confirmed by Herm (1969, p. 107-109, pl. 4, figs 1-5), who synonymized it with the Quaternary species. Herm included this taxon in Chlamys (Aequipecten), but we here follow Waller (1969) and place it within Argopecten Monterosato, 1889 [type species Pecten solidulus Reeve, 1853].
Synonym list:
Griffin & Nielsen (2008):
1819 Pecten purpuratus Lamarck. - Lamarck : p.166
1846 Pecten rudis Sowerby. - Sowerby : p.254 pl. 3; fig. 32
1969 Chlamys (Aequipecten) purpurata Lamarck. - Herm : 107-109 pl. 4; fig. 1-5
1969 Argopecten purpuratus Lamarck. - Waller : p.48 pl. 7-10
2008 Argopecten purpuratus Lamarck. - Griffin & Nielsen : pl. 15; fig. 7-8
References:

Lamarck,d.M.J.B.P.A.. (1819):
Histoire naturelle des animaux sans vertèbres, présentant les charactères généraux etc. . Chez l’auteur, au Jardin du Roi , Paris Vol. 6 p. 343

Sowerby,G.B.. (1846):
Descriptions of Tertiary fossil shells from South America..
In: Geological observations on South America. Eds: Darwin, C.. p. 249-264

Waller,T.A.. (1969):
The evolution of the Argopecten gibbus stock (Mollusca: Bivalvia) with emphasis on the Tertiary and Quaternary species of Eastern North America . The Paleontological Society Memoir, (supplement to Journal of Paleontology 43) Vol. 3 p. 1-125

Herm,D. (1969):
Marines Pliozän und Pleistozän in Nord- und Mittel-Chile unter besonderer Berücksichtigung der Entwicklung der Mollusken-Faunen . Zitteliana Vol. 2 p. 159

Griffin,M.. and Nielsen,S.N.. (2008):
A revision of the type specimens of Tertiary molluscs from Chile and Argentina described by d’Orbigny (1842), Sowerby (1846), and Hupé (1854) . Journal of Systematic Palaeontology
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