Biozones
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Recent papers in Biozones
Se trata de un trabajo de tesis en el cerro El Santísimo, Arivechi, Sonora, México, estudiando la geología del lugar centrandose en la paleontología de la secuencia de rocas calcáreas del Ordovícico Inferior al Superior mediante la... more
The Mio-Pliocene deposits of Djebel Diss (Mostaganem, Northwestern Algeria) are mainly constituted of marls including gypsy-calcareous beds with whitish limestone and stromatolithic limestone, closely comparable to those of the Murdjadjo... more
Benthic foraminiferal assemblages from Nordaustlandet, Svalbard, are described for the first time with the objective of reconstructing the palaeoenvironmental conditions in the area during the late Quaternary. Investigations were carried... more
The last twenty years have seen important findings in the area of paleoanthropology. The topic of man evolution fascinated scientist since Linnaeus (1758). The findings of several new genera and new species enabled the reconstruction of... more
In the scope of the ratification of an international reference boundary for the Rupelian-Chattian transition, it is important to evaluate both stages in their original stratotype areas. In this study, quantitative analysis of benthic... more
L’étude de la succession des calpionelles, sur plusieurs coupes levées dans l’alternance marno-calcaire du Berriasien du domaine rifain externe (Prérif et Mésorif), a permis de caractériser les différentes zones et sous-zones de... more
Abstract: The ‘punctata Event’ (Early–Middle Frasnian transition , Late Devonian) was recently recognized as yet another episode of major geochemical perturbations associated with the Middle-Late Devonian ecosystem readjustments which... more
Les changements observes dans les associations des genres de conodontes, ou biofacies a conodontes, s'effectuent de maniere rapide et synchrone sur des durees inferieures a la duree d'une zone a conodontes. La resolution obtenue... more
A 4190-yr varve record from lake Saki (Crimea) was recently re -analyzed using five different spectral methods, applied both overall and to separate segments of the record (Xanthakis et al., 1995a). Here we consider its palaeoclimatic... more
Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary... more
Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary... more
Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary... more
Benthic foraminiferal assemblages from Nordaustlandet, Svalbard, are described for the first time with the objective of reconstructing the palaeoenvironmental conditions in the area during the late Quaternary. Investigations were carried... more