Results 61 to 70 of about 3,337 (175)

Uppermost Albian biostratigraphy and chronostratigraphy

open access: yesCarnets de Géologie, 2009
The Albian Stage is the highest chronostratigraphic unit of the Lower Cretaceous Series and underlies the Cenomanian Stage of the Upper Cretaceous Series.
Scott Robert W.
doaj  

[Ammonites del Jurásico medio]

open access: yes, 1930
Colección Placas de Linterna (“Linterna Mágica"). La fecha de producción de las mismas entre 1925 – 1940 (¿1930?). Material pedagógico usado en la docencia de la asignatura de Geología de la Escuela de Facultativos de Minas de Mieres por Ignacio Patac y ...
Benzinger, Theodor Hannes
core  

The affinities between the Lower Cretaceous Ammonoidea Ammonites crassicostatus d'Orbigny, 1841 and Ammonites gargasensis d'Orbigny, 1841

open access: yes, 2020
The present contribution provides a taxonomic reassessment of the Lower Cretaceous ammonite species Ammonites crassicostatus d'Orbigny (type species of Colombiceras Spath) and Ammonites gargasensis d'Orbigny (type species of Gargasiceras Casey) from the ...
Pictet, Antoine   +2 more
core  

Phylogenetic hypothesis for early Pliensbachian ammonites

open access: yes, 2018
Phylogenetic hypothesis for early Pliensbachian ammonites of the western Tethys provided in parenthetical format for the entire dataset and for each subdataset analyzed in this ...
Emmanuel Fara (163549)   +11 more
core   +1 more source

Guidebook for the post-congress fieldtrip in the Vocontian Basin, SE France (September 11-13, 2008).- 12th Meeting of the International Nannoplankton Association (Lyon, September 7-10, 2008)

open access: yesCarnets de Géologie, 2008
• Chapter 1. The Aalenian-Bajocian (Middle Jurassic) of the Digne area • Chapter 2. The Global Boundary Stratotype Sections and Points (GSSP) of the Hauterivian: La Charce section (Drôme, France, Vocontian Basin) • Chapter 3.
Mattioli Emanuela   +5 more
doaj  

Ammonites and magnetostratigraphy of the Berriasian–Valanginian boundary deposits from eastern Crimea

open access: yesGeologica Carpathica, 2017
Euthymi, Crassicostatum and Callisto ammonite subzones, correlable with Paramimounum, Picteti, and Alpillensis subzones and probably with the Late Berriasian Otopeta Subzone of the Boissieri Standard Zone have been recognized in calcareous clays of the ...
Arkadiev Vladimir V.   +6 more
doaj   +1 more source

The Ammonites Were Not Pacifists

open access: yes, 2016
Although it is common to believe that the Ammonites were pacifists, the report of their story demonstrates that this is a mistake. Appreciating the Ammonites’ non-pacifism helps us think more clearly about them, and it also explains several features of ...
Boyce, Duane
core  

Intraspecific variation through ontogeny in late Cretaceous ammonites

open access: yes, 2019
Klein, Carina, Landman, Neil H. (2019): Intraspecific variation through ontogeny in Late Cretaceous ammonites. American Museum Novitates 2019 (3922): 1, DOI: 10.1206/3922.1, URL: https://bioone.org/journals/american-museum-novitates/volume-2019/issue ...
Klein, Carina.   +2 more
core   +1 more source

The Abiod at Ellès (Tunisia): stratigraphies, Campanian-Maastrichtian boundary, correlation [L'Abiod d'Ellès (Tunisie) : stratigraphies, limite Campanien-Maastrichtien et corrélation]

open access: yesCarnets de Géologie, 2010
In central Tunisia near the village of Ellès is Wadi Ed Dam. There the Abiod Formation, underlain by the Kef marls and capped by the El Haria marls, crops out in an almost uninterrupted exposure about 286 m thick.
Robaszynski Francis, Mzoughi Moncef
doaj  

Lower Jurassic (Pliensbachian) ammonites from Bornholm, Baltic Sea, Denmark

open access: yes, 2003
Lower Jurassic, ammonites, Bornholm, Baltic ...
Surlyk, Finn   +2 more
core   +1 more source

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