19 results on '"Bersac, Stéphane"'
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2. Can the intraspecific laws of variation be used as a predictive model for understanding species with insufficient data? The example of the early Heteroceratidae in their evolutionary context (heteromorph ammonites, Tethys upper Barremian)
3. Some rare helical Ammonoidea from the lower Aptian (Lower Cretaceous) of the Paris Basin (NE France)
4. When Abnormality Becomes Perennial in a Reduced Population: The Case of Altudostephanus longicostis gen. et sp. nov. (Valanginian Ammonites, South-Eastern France)
5. The heteromorph ammonite genus Ammonitoceras Dumas, 1876 (Ancyloceratidae) in the lower Aptian (Lower Cretaceous) of the Les Ferres Aptian Basin (southeastern France)
6. Early Crioceratites (heteromorphic ammonites) from the lower Hauterivian of south-eastern France: systematics, intraspecific variation and biostratigraphic implications
7. The ammonites of the Les Ferres Aptian Basin (Lower Cretaceous, Southeast of France): the genus Toxoceratoides (Ancyloceratina, Helicancylidae)
8. The heteromorph ammonite genus Ancyloceras (Ancyloceratidae) in the Paris Basin (lower Aptian, Lower Cretaceous, NE France)
9. Implications of the ‘hemihoplitid-like’ ammonites iterative morphology in the context of the late Tethyan Barremian (Early Cretaceous)
10. Size reduction and ornamental oscillation within a Barremian lineage of giant heteromorphic ammonites (Early Cretaceous, northwestern Tethyan margin)
11. Revision of the lower Aptian (Lower Cretaceous) ammonite species Cheloniceras cornuelianum (d’Orbigny, 1841)
12. Two ammonite species under the same name: Revision of Deshayesites deshayesi (d’Orbigny, 1841) based on topotype material (Lower Aptian, Lower Cretaceous, Northeast of France)
13. Problems in the identity of 'Crioceras' barremense Kilian, 1895 (Ancyloceratida, Late Barremian), and their proposed resolution
14. Nouveaux biohorizons et propositions pour le découpage biozonal ammonitique du Barrémien supérieur du Sud-Est de la France [New biohorizons and proposal for a revision of the ammonite biozonation of the Upper Barremian of southeastern France]
15. The lower Aptian ammonites of the Les Ferres Aptian Basin (Lower Cretaceous, Southeast of France) Part I: Introduction and biostratigraphy
16. Palaeontology, taxonomic revision and variability of some species of the genus Gassendiceras Bert et al., 2006 (Ammonitina, Upper Barremian) from southeastern Franc
17. Evolutionary patterns-tested with cladistics-and processes in relation to palaeoenvironments of the Upper Barremian genusGassendiceras(Ammonitina, Lower Cretaceous)
18. The Dichotomus Horizon: proposal for a new biochronologic unit of the Giraudi Zone of the Upper Barremian of southeastern France, and considerations regarding the genus Imerites ROUCHADZÉ (Ammonoidea, Gassendiceratinae)
19. Evolutionary patterns-tested with cladistics-and processes in relation to palaeoenvironments of the Upper Barremian genus Gassendiceras (Ammonitina, Lower Cretaceous).
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