Just out | Turonian echinoids from Azilé Formation from Gabonese coastal basin in South Libreville region @ Annales de Paléontologie


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Turonian echinoids from Azilé Formation from Gabonese coastal basin in South Libreville region


Author(s)

Urlain Gaël Yakouya-Moubamba, Benjamin Musavu Moussavou


Abstract:

Study of Turonian echinoids from Gabon store section allowed us to distinguish 10 species belonging to 2 genera: Mecaster pseudofourneli (Péron et Gauthier 1878), Mecaster toucasanus (d’Orbigny, 1854), Mecaster africanus (Coquand, 1862), Mecaster semicavatus (Peron et Gauthier 1880), Mecaster verneuili (Desor, 1847), Mecaster cf. orbignyanus (Desor, 1857), Mecaster palpebratus (Loriol, 1888), Mecaster sp.1, Mecaster sp. 2, Epiaster michelini (Agassiz) 1847. All species are found for the first time in Gabonese coastal basin. The composition and the distribution of echinoids fauna and the sedimentary characteristics indicate a proximal shallow platform deposit environment, with warm water and soft substrate. Two types of depositional environment are suggested: (1) a deep part of the proximal platform, represented by silty limestones and (2) a shallower part of the proximal platform, represented by limestones.

Keywords: Gabonese coastal basin; EchinoidsTuronianLibreville


DOI: 10.1016/j.annpal.2017.04.003

READ IT HERE: http://www.sciencedirect.com/science/article/pii/S0753396917300277

Lurdes Fonseca

Assistant Professor and Researcher at University of Lisbon
Sociologist (PhD), Paleontologist (Researcher in Micropaleontology), Majors in Sociology and Biology, Minor in Geology. Main interests in Paleontology: Microfossils, Molecular fossils, Paleobiology and Paleoecology. (read more about me)