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Annales Societatis Geologorum Poloniae
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Annales Societatis Geologorum Poloniae
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Ontogeny and variability in ribbing of Late Valanginian lamellaptychi (Ammonitina)

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2016 Czech Republic Publisher:Polskie Towarzystwo Geologiczne - Polish Geological SocietyJournal:Annales Societatis Geologorum Poloniae (issn: 0208-9068, Copyright policy )
Authors: Vašíček, Z. (Zdeněk); Klein, J.; Janssen, N. M. M.;

doi: 10.14241/asgp.2016.002

handle: 11104/0261862

Ontogeny and variability in ribbing of Late Valanginian lamellaptychi (Ammonitina)

Abstract

Late Valanginian (Early Cretaceous) lamellaptychi of the genus Mortilletilamellaptychus were collected from seven ammonite-controlled sections in south-eastern France demonstrate distinct changes in ribbing during growth. Simpler juvenile ribbing, which is essentially uniform for all of the specimens studied, differs distinctly from the complicated arrangement of the adult ribs. Changes in ribbing morphology were observed in the five species studied, two of which were identified as new (i.e. Mortilletilamellaptychus heterocostatus sp. nov. and M. bicostatus sp. nov.).

Country
Czech Republic
Related Organizations
Keywords

ontogeny, Late Valanginian, Mortilletilamellaptychus, Lamellaptychi, south-eastern France

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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