Un exemple de spéciation lié à l'eustatisme: l'apparition précoce de Schackoina cabri (foraminifère planctonique mésogéen)

Autor:	Françoise Magniez-Jannin, Gérard Delanoy, Jean-Gabriel Bréhéret
Rok vydání:	1997
Předmět:	Ammonite biology Aptian Ocean Engineering Biozone Biostratigraphy biology.organism_classification Cretaceous language.human_language Foraminifera Paleontology Phanerozoic language Mesozoic Ecology Evolution Behavior and Systematics Geology
Zdroj:	Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science. 325:225-230
ISSN:	1251-8050
Popis:	Investigation of planktic foraminifers from the Lower Aptian of the Vocontian Basin (SE France) reveals that Schackoina cabri makes a very discrete first appearance in the Weissi ammonite zone and not in the Deshayesi zone, i.e. before the global anoxic event OAE 1a and not after as was accepted in the literature. This discovery seems to support the recent model whereby speciation of planktic foraminifers occurred in marine lowstands and their real expansion during the ensuing sea-level rise.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d7d679115d4ae79762f69419e4d60fc9 https://doi.org/10.1016/s1251-8050(97)88293-6 Zobrazit plný text záznamu