Neithea dutrugei (Coquand, 1862)
COQUAND, H. 1862. Géologie et Paléontologie de la Région de la province de Constantine. Mémoires de la Société d'Emulation de La Provence, 2: 5-342, pls. 1-35 [p. 219, pl. 13, figs. 1, 2]
1862 Janira dutrugei Coquand, 1862
1902 Vola dutrugei var. beirensis Choffat, 1902
1934 Pecten (Vola) zakarjensis Blanckenhorn, 1934
1902 Vola dutrugei var. beirensis Choffat, 1902
1934 Pecten (Vola) zakarjensis Blanckenhorn, 1934
H. Coquand, 1862, plate 13.
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«Long.: 70 millim.; larg.: 65 millim.
Coquille très-convexe, ovale, trigone, presque aussi large que haute. Valve supérieure très-excavée, ornée de côtes rayonnantes, nombreuses, séparées par des sillons peu creusés, dont six plus profonds que les autres. Valve inférieure fortement bombée et recourbée à son sommet, pourvue de deux systèmes de côtes fasciculées: le premier, plus saillant, formé de trois côtes assez épaisses; le deuxième, d'une grosse côte, mais moins élevée que dans les premières, engagée entre deux sillons profonds dans lesquels se développe quelquefois une petite côte. Région anale et buccale porlant des côtes rayonnantes plus fines au nombre de dix à douze. Cette espèce qui rappelle les J. quinquecostata et quadricostata s'en sépare facilement par la disposition de ses grosses côtes qui sont constamment au nombre de trois. Je l'ai recueillie dans l'etage rhotomagien deTénoukla, de Batna et de Chéliah (Auress).» HENRI COQUAND, 1862
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«Material: One right valve from Pinei, Lago di S. Croce (DGP 2507, colI. de Zigno: H = 31.5 mm; L = 25.0 mm) .
Discussion: The specimen has an incomplete shell, but the tripartite principal ribs, and the five intercalary ribs of which the middle one is more strongly developed, are clearly visible. It is thus very similar to the types of Coguand (housed in MAFI, Budapest).
Distribution: Typical Tethys species recorded from Cenomanian to (?) Campanian: Portugal, Italy (eastern Venetian Prealps and Abruzzo), Croatia (Istria), Morocco, Algeria, Tunisia, Libya, Egypt, Israel, Syria, Irag (Text-fig. 4).»
DHONDT, A. V. & I. DIENI. 1993. Non-rudistid bivalves from Late Cretaceous rudist limestones of NE Italy (Col di Schiosi and Lago di S. Croce areas). Memorie di Scienze Geologiche, 43: 165-241, pls. 1-20, text-figs. 1-18. [p. 190]
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Neithea (Neithea) dutrugei (Coquand, 1862); A. Dhondt & I. Dieni, 1993, Non-rudistid bivalves from Late Cretaceous rudist limestones of NE Italy (Col di Schiosi and Lago di S. Croce areas), plate 4, figure 17.
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«Discussion:
The specimen figured by COQUAND was not very fortunately chosen because, its ribpattern is of an unusual type with tripartite principal ribs and 3 intercalary ribs of which the side ones are filae-like. Besides, the auricles of COQUAND's specimen are obviously incomplete and the additions incorrect. The rib pattern given above, with more regular distribution, is more common than the one figured by COQUAND. There are nevertheless cases where the rib-division goes further than mentioned above: Neithea dutrugei var. beirensis (CHOFFAT) in which both the principal and the median intercalary ribs are split into three and so the rib number is greatly increased.
Also on CHOFFAT's specimens the areal riblets are very developed and reach a stage comparable to an intercalary rib: this explains the very high rib number (80) given by CHOFFAT. On Steinkernen the thinnest intercalary ribs and the riblets on areas and auricles are invisible; thus steinkernen appear to bear only 11 equally developed ribs. In the British Museum (Nat. Hist.) sub LL 21536-21542 there is a whole series which agrees with this description. By accepting this interpretation of the above mentioned specimens it is possible to put N. duplicicosta (F. RECH, 1917) and probably also N. blanckenhorni (BROILI) into synonymy with N. dutrugei. N. zakarjensis (BLANCKENHORN) according to its description and figure is a typical N. dutrugei of the most common form. This species has a slightly particular position amongst the other Neithea-species because of its exceptionally high number of ribs in the most extreme cases. Because of this high rib number it is difficult to recognize the regular rib distribution which characterizes Neithea-species.» DHONDT, A. V. 1973. Systematic revision of the subfamily Neitheinae (Pectinidae, Bivavia, Mollusca) of the European Cretaceus. Mémoires du Institute Royal des Sciences Naturelles de Belgique, 176: 1-101, pls. 1-5. [p. 60]
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Neithea (Neithea ?) dutrugei (H. Coquand, 1862); A. V. Dhondt, 1973, Systematic revision of the subfamily Neitheinae of the European Cretaceus, plate 4, figure 3; plate 5, figures 4a, 4b.
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