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Hoploscaphites sp. Kennedy 1986 from: Kennedy, W.J.. (1986): The ammonite fauna of the Calcaire ą Baculites (Upper Maastrichtian) of the Cotentin Peninsula (Manche, France) . Palaeontology Vol. 29(1) p. 25-83
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Species Hoploscaphites sp. Kennedy 1986



Diagnosis / Definition:
Kennedy (1986):
Material. Seven specimens, FSR2 from Orglandes; MNHP 1247 are from the 'region de Ste Colombe'; FSR3 from 'Manche'; EMP 'A' from Orglandes; SP 13 from an unspecified locality; FSM 3 from Chef-du-Pont, Fresville; and MHNG (ex Pietet Collection) from Fresville. Description. Phragmocone as in H. constrictus with crowded branching and intercalated ribs, with up to five ventrolateral tubercles and two umbilical bullae at end ofphragmocone (PI. 16, fig. 4). Body-chamber initially with variable umbilical or umbilicolateral tubercles and low, broad ribs (Pl, 13, fig. 14; PI. 16, figs. 4, 12, 19), strong ventral c1avi (pI. 13, fig. 15; PI. 16, figs. 1, 11, 13, 18), and blunt siphonal nodes (PI. 16, figs. I, 13, 18). No ventral ribs orriblets. TubereIes lost on last half ofbody-chamber where ribs weaken (pI. 16, figs. 14 and 19) or become very fine indeed (PI. 16, figs. 3,4, 12). Suture simple (text-fig. l lr-x), as in H. constrictus.
Discussion / Comments:
Kennedy (1986):
Discussion. I originally thought these specimens to be Acanthoscaphites. The suture is very simple, as in H. constrictus, while the siphonal node is coarse and blunt. Given the presence of an incipient siphonal node in some H. constrictus (e.g .. PI. 15, figs. 18 and 29) the present material is probably no more than a further variant. There is a strong resemblance to H. schmidi (Birkelund, 1982) (p. 17, pI. 1, figs. 7-10; pI. 2, figs. 1-4) from the middle Maastrichtian ofHemmoor, north Germany. The holotype, a microconch, is closely similar, but the detail ofventral tubercles and ribs on the phragmo¬cone and the delicate secondary ribs on the body-chamber are distinctive. The large, presumably macroconch fragments referred to H. schmidi by Birkelund (1982, pI. 2, figs. 1-4) are far larger than any H. constrictus known, suggesting it to be a giant, short-lived stock. The present material thus represents a significantly later parallel departure in ornament from typical H. constrictus.
Synonym list:
Kennedy (1986):
1986 Hoploscaphites sp. Kennedy. - Kennedy : p.73 pl. 13, figs. 14 and 15; pl. 16, figs. 1-6, 11-14, 18, 19; text-fig. 11I-K
References:

Kennedy,W.J.. (1986):
The ammonite fauna of the Calcaire ą Baculites (Upper Maastrichtian) of the Cotentin Peninsula (Manche, France) . Palaeontology Vol. 29(1) p. 25-83

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