Argopecten purpuratus (Lamarck, 1819)
LAMARCK,
J. B. 1819. Histoire naturelle des animaux sans vertèbres, présentant les
caractères généraux et particuliers de ces animaux, leur distribution, leurs
classes, leurs familles, leurs genres, et la citation des principales espèces
qui s'y rapportent. Tome
sixième, Premier partie, 343 p. Chez l'Auteur, au Jardin du Roi. De l'imprimerie de A. Belin. Paris, 1819. [p. 166]
Pecten purpuratus Lamarck: Reeve, L. A., 1852-1853, Conchologia Iconica, Monograph of the genus Pecten, plate 5, figure 25.
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«11. Peigne pourpré. Pecten purpuratus.
P. testa alba, purpureo et nigro purpurascente varia; radiis 26, convexis; intus zona purpureo-nigricante. Habite les mers orientales et australes. Mus. nº. Mon cabinet. Espèce rare et très-belle. Ses oreillettes sont un peu inégales. Largeur, 112 millimètres. On le dit du Japon». JEAN BAPTISTE LAMARCK, 1819
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«TYPE MATERIAL. Holotype of Pecten rudis: NHM-L27688 (Coquimbo).
TYPE LOCALITY. ‘Coquimbo, Chile’. The original label by Darwin reads ‘intermediate bed’.
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: 204), this species is similar to Argopecten purpuratus from the Quaternary beds of Coquimbo. This was later confirmed by Herm (1969: 107-109, pl. 4, figs 1-5),who synonymised 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).»
GRIFFIN, M. & S. N. NIELSEN. 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, 6 (3): 251-316, pls. 1-24. [p. 285]
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Holotype of Pecten rudis Sowerby, 1846; M. Griffin & S. N. Nielsen, 2008, A revision of the type specimens of Tertiary molluscs from Chile and Argentina, plate 15, figures 7, 8.
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«REMARKS :
The specimens in the Lamarck collection (1 complete specimen and 1 valve) correspond to the annotations made by Rosalie. The single left valve is closest to Lamarck's original measurement (112 mm), and is herein selected as lectotype. The paralectotypes are semi-adult specimens, and much smaller than the width mentioned by Lamarck. CURRENT TAXONOMIC POSITION AND DISTRIBUTION: The species is presently placed in Argopecten Monterosato, 1889, which is a senior synonym of Plagioctenium Dall, 1898. The geographical range is from Colombia to Chile, and living material is observed in shallow inshore waters on rocky and sandy bottoms.» DIJKSTRA, H. H. 1994. Type specimens of recent species of Pectinidae described by Lamarck (1819), preserved in the Muséum d'Histoire Naturelle of Geneva and the Muséum National d'Histoire Naturelle of Paris. Revue Suisse de Zoologie, 101 (2): 465-532, 30 pls. [p. 473]
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Pecten purpuratus Lamarck, 1819; H. H. Dijkstra, 1994, Type specimens of recent species of Pectinidae described by Lamarck, plate 4, figures 9-11.
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«Holotype: Muséum National d'Histoire Naturelle, Paris.
Type locality: Here designated Callao, Peru. Original description: P. testa alba, purpureo et nigro purpurascente varia; radiis 26, convexis; intus zona purpureo-nigricante. Habite les mers orientales et australes. Mus. no. Mon cabinet. Espèce rare et très-belle. Ses oreillettes sont un peu inéga!es. Largeur, 112 millimètres. On le dit du Japan. Additional dercription: Shell large, adult specimens averaging 105 mm in height and 120 in length; disk nearly circular, occasionally slightly oblique; moderately convex, left valve more so than right; hinge line more than half length of disk; auricles slightly unequal, either anterior or posterior being longer. Right valve with 19 to 26 broad and flat-topped ribs, smooth on top except for very fine concentric lines of growth, and with profusely lamellated ridges along sides; interspaces narrower and prominently lamellated, especially near ventral margin, lamellae occasionally forming low central ridge near margin. Anterior auricle with 3 to 5 imbricated riblets: byssal notch narrow and moderately deep, with ctenolium of 4 to 8 teeth. Posterior auricle squared, truncated, or with shallow sinus; 7 or 8 radiating ridges; entire auricle concentrically striated. Left valve with profusely lamellated ribs, fringed along sides; interspaces narrow, strongly lamellated, and with central ridges prominent from ventral margin nearly to unbonal area. Both auricles covered with concentric striae and having 7 or 8 low ridges; anterior auricle with shallow byssal sinus, posterior same shape as that of right valve. Cardinal crura fairly strong to very strong; crura and provinculum black or very deep brown except in yellow-white or white specimens, in which that area is white; heavy nodule at base of each auricle. Rest of internal structure unique after shell attains height of about 75 mm: broad and flat semicircular ridge forms in each valve, reaching from anterior to posterior submargin; top edge of ridge is about two-thirds to three-quarters of distance from hinge line to ventral margin; ridge is thickest in its center and tapers above and below. Color range fairly extensive: most common form white with purple ribs, variants having ribs of pink, pink and purple or pale to deep brown, often mottled; less common colors solid orange, yellow-white, white, and orange mottled with purple-brown and white. Interior with prominent concentric band of brown, purple-brown, purple or violet, except in yellow-white or white specimens, which have white interior. Remarks: Although somewhat variable, this species is very distinct and easily recognizable. On the basis of available material the maximum length appears to be about 150 mm. Lamarck's report of this species from Japan was obviously erroneous. Geographical range: Corinto, Nicaragua, to Coquimbo Province, Chile. Geochronological range: Pliocene, Pleistocene, Recent. Bathymetric range: Shallow water inshore to 50 fathoms. Ecological data: Found on rock, shale or sand bottoms, occasionally associated with algae. Hancock Expeditions Collecting Stations: PERU: 8 stations; one each at Lorenzo and Fronton Islands, near Callao, six in Independencia Bay; 5-10 fathoms, rock or sand. COSTA RICA: Port Parker; 5 fathoms, sand, sta. 468-35.» GRAU, G. 1959. Pectinidae of the eastern Pacific. Allan Hancock Pacific Expeditions, 23: i-viii, 1-308, 57 pls. University of Southern California Press. Los Angeles, California. [p. 104, 105]
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Chlamys (Argopecten) purpurnta (Lamarck) 1819; G. Grau, 1959, Pectinidae of the eastern Pacific, plate 34.
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«This is typically a cold-water scallop of the Humboldt Current and attains its best development along the coast of Peru southward from the Bay of Sechura. More northerly records are questionable. In Peru, it is a highly esteemed seafood, commonly appearing in the markets of Lima by the name of "senoritas" [sic]. As fossil, it is plentiful in the Peruvian tablazos and in those of southern Ecuador. Grant and Gale considered certain fossil Pectens from the Pliocene of southern California as subspecies of purpuratus. A. purpuratus is strikingly similar to members of the A. eboreus solarioides group from the Miocene and Pliocene of Florida and the south Atlantic states.»
OLSSON, A. A. 1961. Mollusks of the Tropical Eastern Pacific, Particularly from the southern half of the Panamic-Pacific Faunal Province (Panama to Peru). Panamic-Pacific Pelecypoda. Paleontological Research Institution. New York , USA. pp. 155-495. [p. 163]
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Aequipecten (Plagioctenium) purpuratus (Lamarck); A. A. Olsson, 1961, Mollusks of the Tropical Eastern Pacific, plate 19, figures 1a, 1b.
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«Dall gave the recent distribution as being from Coquimbo, Chile, northward to Ecuador.
The three heavy, radiating riblets on the anterior ear of the right valve, and the sharply serrated edges of the radial ribs are characteristic of Pecten purpuratus Lamarck. P. purpuratus is found at the present time in the waters of the Peruvian province in the Pacific ocean. It occurs in the Pliocene and Pleistocene of Chile, but has not been reported previously from the Tertiary north of Panama. Specimens have been identified from the Salada Pliocene at Turtle Bay, Lower California, and from the Pliocene of Cedros Island. The right valve figured in this paper came from Turtle Bay, the left from Cedros Island. Possibly the left valve described as P. subventricosus by Dall from southern California and referred to P. cerrosensis by Arnold, is identical with P. purpuratus Lamarck.» HERTLEIN, L. G. 1925. Pectens from the Tertiary of Lower California. Proceedings of the California Academy of Sciences [4th Series], 14 (1): 1-35. [p. 14, 15]
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Pecten (Plagioctenium) purpuratus Lamarck; L. G. Hertlein, 1925, Pectens from the Tertiary of Lower California, plate 1, figure 1; plate 4, figures 2 and 4.
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«Distribution.— From Coquimbo, Chile, northward to Ecuador.
Shell orbicular, moderately convex, subequivalve, rather thin, with about 26 flat-topped ribs, laterally fringed, and separated by channeled interspaces; colors white, rose color, and different shades of purple distributed in an irregular manner; the interior zoned with blackish purple. The large adductor muscle of this species is a delicious morsel when delicately cooked. The Chilean name for the species is Ostion.» DALL, W. H. 1910. Report on a collection of shells from Peru, with a summary of the littoral marine mollusca of the Peruvian Zoological Province. Proceedings of the United States National Museum, 37 (1704): 147-294, pls. 20-28. [P. 149]
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Pecten purpuratus Lamarck; W. H. Dall, 1910, Report on a collection of shells from Peru, with a summary of the littoral marine mollusca of the Peruvian Zoological Province, plate 26, figures 5, 6.
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