|mhorn||Дата: Wednesday, 15.06.2011, 16:12 | Сообщение # 1|
|Quereilhac P., Guinot Y. (2011) Les "Marnes à theoi" de Pamproux (Deux-Sèvres, France), Sous-Zone à Antecedens (Oxfordien moyen, Zone à Plicatilis): diversité des faunes et découverte de nouvelles espèces d'ammonites // Carnets de Géologie / Notebooks on Geology : Mémoire 2011/01 (CG2011_M01). |
Html : http://paleopolis.rediris.es/cg/CG2011_M01/
Pdf : http://paleopolis.rediris.es/cg/CG2011_M01/CG2011_M01.pdf
Two road cuts at Doux and Pamproux in the Department of Deux Sèvres (Poitoux, France) exposed the base of the middle Oxfordian (Plicatilis Zone). Only the Pamproux section (on the Pampr'oeuf factory site) was studied in detail. There, the Plicatilis Zone is represented only by the Antecedens sudzone. Collections were made in situ and from rubble consisting solely of marls from the Antecedens Sub-zone. Sediment washing resulted in the collection of a very large number of very diversified and extremely small fossils. So a great number of individuals of two new species of Taramelliceratinae were discovered, along with two new species of "Glochiceras", their adult forms very different in size, resembling nothing so much as Ochetoceras (Ochetoceras) canaliculatum (von BUCH, 1831) in the morph subclausum [m] OPPEL, 1863. The sub-family Taramelliceratinae dominates the ammonite fauna.
Middle Jurassic - Lower Cretaceous ammonites & aptychi