Temat: south-eastern France - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ontogeny and variability in ribbing of Late Valanginian lamellaptychi (Ammonitina)
Autorzy:: Vašíček, Z.
Klein, J.
Janssen, N. M .M.
Powiązania:: https://bibliotekanauki.pl/articles/191449.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Geologiczne
Tematy:: Lamellaptychi
Mortilletilamellaptychus
ontogeny
Late Valanginian
south-eastern France
Opis:: 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.).
Źródło:: Annales Societatis Geologorum Poloniae; 2016, 86, 1; 17-28
0208-9068
Pojawia się w:: Annales Societatis Geologorum Poloniae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Palaeontology, taxonomic revision and variability of some species of the genus Gassendiceras Bert et al., 2006 (Ammonitina, Upper Barremian) from southeastern France
Autorzy:: Bert, D.
Bersac, S.
Delanoy, G.
Canut, L.
Powiązania:: https://bibliotekanauki.pl/articles/138959.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Ammonoidea
Gassendiceratinae
Upper Barremian
south-eastern France
taxonomy
intraspecific variability
amonity
Barrem
Francja
taksonomia
zmienność wewnątrzgatunkowa
Opis:: Bed-by-bed sampling of twelve Barremian sections in southeastern France from pelagic basin (Vocontian Basin) to neritic platforms (Arc of Castellane, Arc of Nice and Provencal Domain) has enabled the collection of isochronous samples of the ammonite genus Gassendiceras. Three poorly known species of the Toxancyloceras vandenheckei Zone (Upper Barremian) are revised: G. alpinum, G. multicostatum and G. hoheneggeri; two new species are described (G. rebouleti nov. sp. and G. bosellii nov. sp.). The intraspecific variability of particular species was recognised. This variability is between slender peramorphic and robust paedomorphic extreme morphologies, with the presence of all intermediates.
Źródło:: Acta Geologica Polonica; 2013, 63, 3; 355-397
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Upper upper Albian (Mortoniceras rostratum Zone) cephalopods from Clansayes (Drôme, south-eastern France)
Autorzy:: Jattiot, Romain
Lehmann, Jens
Latutrie, Benjamin
Tajika, Amane
Vennin, Emmanuelle
Vuarin, Pauline
Brayard, Arnaud
Fara, Emmanuel
Trincal, Vincent
Powiązania:: https://bibliotekanauki.pl/articles/2086664.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ammonites
Cretaceous
upper Albian
taxonomy
south-eastern France
shell chirality
amonity
kreda
alb
taksonomia
Francja południowo-wschodnia
chiralność
Opis:: We document an upper upper Albian (Mortoniceras rostratum Zone) cephalopod assemblage from Clansayes (Drôme, south-eastern France). Although fossils are rare in local exposures and in the single sampled level, a decade of intensive fossil collecting yielded 290 ammonite and 5 nautilid specimens. In total, we describe 1 species of nautilid and 24 species (within 17 genera) of ammonites, including 13 heteromorphs. Only two of these ammonite taxa were previously recorded from the upper upper Albian at Clansayes, which demonstrates the value of this fauna with regard to taxonomy, palaeobiology and palaeobiogeography. Based on morphological and biometric analyses performed on an extensive material (104 specimens), we discriminate two species for the heteromorphic ammonite genus Mariella Nowak, 1916 within the Mortoniceras rostratum Zone. In addition, we investigate shell chirality patterns in Mariella from the late Albian of southern France. Upon comparison of the Clansayes material with older material from the immediately underlying upper Albian Mortoniceras fallax Zone at the neighbouring Salazac locality, we identify an increase in the proportion of sinistral specimens. This observed increase in the frequency of sinistral Mariella specimens may hypothetically be part of a global evolutionary pattern, considering that nearly all documented younger Cenomanian Mariella (and more generally Cenomanian turrilitids) are sinistral.
Źródło:: Acta Geologica Polonica; 2022, 72, 2; 187--233
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

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