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Showing results for tags 'lower aalenian'.
Found 3 results
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This ammonite gives its species name to the so-called "Comptum bank", which is widespread in Europe, as well as the comptum subzone. The ribs are more pronounced and the whorls are wider than by L.opalinum. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Rulleau, L. (1997): Les Ammonites de l'Aalénien de la region lyonnaise, Minéreaux et Fossiles #251, Mai 1997
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I recently tried to find out in which formation this was found and discovered to my consternation that the French don't apply formation names to their lithology. The iron sulphide rich limestone matrix of the Leioceras Beds give the fossils an attractive color. Literature: Rulleau, L. (1979): Geologie et Paleontologie des Carrières Lafarge à Belmont (Rhone), Section Geol. d. Comité d'Entreprise de l'usine du Val d'Azergues Rulleau, L. (1997): Les Ammonites de l'Aalénien de la region lyonnaise, Minéreaux et Fossiles #251, Mai 1997
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Another ammonite species which gives its name both to the lithographical unit and the biostratigraphical zone. This zone is practically nonexistent in southern Germany, but interestingly enough, can be found both in Great Britain and France. For this reason I was pleased to recieve this specimen on a trade. Lithography: Scissum Beds Literature: Whicher, Sole & Chandler (2014): The Gastropod and Ammonite Fauna of two anomalous Facies in the Inferior Oolite of Burton Cliff, South Dorset. Proceedings of the Dorset Natural History & Archaeological Society. Vol. 135
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- a1068
- burton bradstock
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