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A new species of Lyelliceras (Ammonoidea, Lyelliceratidae) from the Albian (Lower Cretaceous) of France*

Published online by Cambridge University Press:  24 March 2014

W.J. Kennedy
W.J. Kennedy*
Affiliation:
Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, United Kingdom. Email: jim.kennedy@oum.ox.ac.uk
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Abstract

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A new lyelliceratid, Lyelliceras escragnollensis sp. nov., is described from the condensed Albian of Escragnolles (Var) and La Balme de Rencurel (Isère), as well as from the upper Lower or lower Upper Albian of Maurepaire (Aube), in France. The new species is precisely dated on the basis of a previous record from the lower Middle Albian Lyelliceras lyelli Subzone of the Hoplites dentatus Zone at Courcelles (Aube). It is regarded as a short-lived descendant of Lyelliceras pseudolyelli, and is characterised as a compressed species of the genus in which the inner ventrolateral tubercles are weak and apparently absent on the early phragmocone whorls, the outer ventrolateral clavi feeble, offset to opposite across the venter, the siphonal clavi being more numerous than the outer ventrolateral.

Keywords

AmmonoideaLyelliceratidaeLyellicerasAlbianLower CretaceousFrance
Type
Research Article
Information
Netherlands Journal of Geosciences , Volume 90 , Issue 2-3 , November 2011 , pp. 95 - 98
Copyright
Copyright © Stichting Netherlands Journal of Geosciences 2011

Footnotes

*

In: Jagt, J.W.M., Jagt-Yazykova, E.A. & Schins, W.J.H. (eds): A tribute to the late Felder brothers – pioneers of Limburg geology and prehistoric archaeology.

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