Vingt-deux espèces et sous-espèces d'Ostracodes appartenant à quinze genres ont été décrits dans les formations de l'Eocène moyen du Fayoum. Quatre espèces et une sous-espèce sont nouvelles. Une phylogénie du genre Loxoconcha est proposée avec une analyse biostratigraphie et paléoécologique de l'ostracofaune
Nummulites gizehensis is the oldest fossil described (Pline, Strabon) and the most famous because it constitues a part of the limestone of the Pyramids of Gizeh. The old studies (Ph. de la Harpe, 1881-1883 ; R. Said, 1951) had shown the great variety of these species and had tried to study the repartition of different varieties. After to have defined the ancestors of the N. gizehensis group, we sketch the phylogeny of this. The situation of the different varieties is in conformation with the Planctonics chart at the Fayoum area. Afterward a selected dispersion across the Mesogea, nay across the Atlantic is evoked.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.