Camptonectes virgatus kaffraria (Rennie, 1930)
RENNIE, J. V. L. 1930. New Lamellibranchia and Gastrapoda from the Upper Cretaceous of Pondoland (with an Appendix on some Species from the Cretaceous of Zululand). Annals of the South African Museum, 28: 159-260, pls. 16-31, 3 text figs. [p. 178, pl. 16, figs. 12-15]
1030 Pecten (Camptonectes) kaffraria Rennie, 1930
1940 Pecten woodsi Tavani, 1940
1940 Pecten woodsi Tavani, 1940
J. V. L. Rennie, 1930, plate 16.
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«Pecten (Camptonectes) kaffraria, sp. nov.
(PI. XVI, figs. 12-15.) 1906. P. (Camptonectes) sp., Woods : Ann. S. Afr. Mus., vol. iv, p. 297, pl. xxxv, figs. 12, 13.
Material.— Six specimens, T. Mus., Nos. 1598-1603. Types, Nos. 1601 (left valve) and 1602 (right valve). Description (after Woods).— Right valve ovate, slightly inequilateral, with the dorsal third pointed, and the margin of the remaining part forming a regular curve. Antero-dorsal margin rather longer than the postero-dorsal. Ornamentation consists of numerous fine radial furrows. Near the median part of the valve the furrows are nearly straight and often discontinuous; they are separated by broad, flat interspaces on which fine concentric lines may occur. On the anterior and posterior parts of the valve the furrows become more curved, deeper, and more continuous, and the interspaces become narrower, more raised, and riblike. The furrows do not show punctae. Anterior ear large, with its anterior margin nearly at right angles to the hinge line, ornamented with fine ridges parallel with the anterior margin; byssal sinus of moderate size. Posterior ear smaller than the anterior, with its outer angle obtuse, ornamented with fine radial ribs and growth-ridges. Left valve with ornamentation similar to, but rather coarser than, that on the right valve. Anterior ear large, with its outer angle nearly rectangular. Posterior ear smaller than the anterior, with its outer angle obtuse. Length, 17 mm.; height, 19 mm. There is nothing to add to this description. Most of the specimens are considerably larger than that described by Woods. The measurements of No. 1601, with the ventral margin restored, are: length, 34 mm.; height, 35 mm. No. 1600 would, when complete, have approximately the following dimensions: length, 54 mm.; height, 57 mm. Remarks.— Woods states that the specimens examined by him belong to the same type as P. virgatus Nilsson, but appear to differ in having finer ornamentation, and resemble most nearly the example figured by Römer from Texas as P. virgatus. With more material from Pondoland at hand, it is possible to state that the ornamentation is very much finer than in the Swedish species, and that it is extremely unlikely that the present examples belong to the same species as the small type figured by Nilsson (45, p. 22, pl. ix, fig. 15) and Hisinger (27, p. 52, pl. xvii, fig. 3). In the case of the shell figured by Römer from Texas (53, p. 66, pl. viii, fig. 5), the ornamentation is certainly coarser than in any of the present specimens, and, moreover, there appears to be a more pronounced system of fine concentric lines. Under the circumstances it is desirable to have a new specific name for the Pondoland forms. The absence of punctae in the furrows, combined with the exceedingly fine ornamentation, separates the shells at once from P. striato-punctatus Römer and P. curvatus Geinitz (76, vol. i, pp. 157-162).» JOHN V. L. RENNIE, 1930
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«Pecten kamerunensis von Koenen, 1897 (p. 20, pl. 3, figs. 14, 15) and P. productus von Koenen, 1897 (p. 20, pl. 3, fig. 17a, b) were synonymised by Dartevelle and Freneix (1957), with C. virgatus var. kaffraria, a form originally described (Rennie, 1930, p. 178, pl. 16, figs. 12–15) from the Upper Cretaceous of Pondoland. Dartevelle and Freneix (1957, p. 70, pl. 9, figs. 3a, b, 4–7) recorded it from the Lower Turonian and ‘‘Senonian’’ of Cameroon, the Lower Santonian of Gabon, the Cenomanian and Turoniane ‘‘Senonian’’ of Congo and the ‘‘Senonian’’ of Angola.»
CASADÍO, S., M. GRIFFIN & A. PARRAS. 2005. Camptonectes and Plicatula (Bivalvia, Pteriomorphia) from the Upper Maastrichtian of northern Patagonia: palaeobiogeographic implications. Cretaceous Research, 26: 507-524, figs. 1-6. [p. 513]
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«This is also true for Pecten (Camptonectes) sp. WOODS, 1906 (= Pecten kaffraria RENNIE, 1930 and Camptonectes woodsi TAVANI, 1940 (objective synonyms), the sculpture is fine, much more so than on NILSSON's figures, but not very different from certain finely ornamented specimens from Maastricht. Most African specimens have a fine sculpture, and thus it is probably true that they are a different "variety" as proposed by E. DARTEVELLE & S. FRENEIX (C. virgatus var. kaffraria).»
DHONDT, A. V. 1972. Systematic revision of the Chlamydinae (Pectinidae, Bivalvia, Mollusca) of the European Cretaceous. Part 1: Camponectes. Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, 48 (3): 1-60, pls. 1, 2. [p. 28, 29]
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«Les espèces distinguées par von Koenen dans le Crétacé supérieur du Mungo sous les noms de P. kamerunensis, P. productus, ne nous paraissent pas différentes de la variété que nous avons. Cependant, étant donné que nous n’avons pu qu'examiner les figures et lire les descriptions, nous nous garderons d’être affirmatifs dans la synonymie indiquée.
Des exemplaires de taille nettement plus faible, très décortiqués, provenant des calcaires noirs du Mungo se trouvent dans notre matériel. Ils' paraissent bien correspondre aux formes de von Koenen et ne peuvent guère être séparés de C. kaffraria.» DARTEVELLE, E., S. FRENEIX & J. SORNAY. 1957. Mollusques fossiles du Crétacé de la Côte occidentale d'Afrique du Cameroun à l'Angola. 2.-Lamellibranches. Annales du Musée royal du Congo belge, 20: 1-271, pls. 1-35. [p. 71]
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Camptonectes virgatus (Nilsson) var. kaffraria (Rennie); E. Dartevelle, S. Freneix & J. Sornay, 1957, Mollusques fossiles du Crétacé de la Côte occidentale d'Afrique du Cameroun à l'Angola, 2.Lamellibranches, plate 9, 3a, 3b, 4-7.
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