Aptian–Cenomanian echinoids from northern Sinai, Egypt

Abstract

Aptian–lower Cenomanian sedimentary rocks, assigned to the Risan Aneiza and Halal formations and exposed in northern Sinai yield rich, well-preserved echinoid assemblages. Thirty-two species (16 regular and 16 irregular), in 27 genera, have been identified and are here systematically described from the Gebel El Tourkumanyia and Wadi El Karm sections (El Maghara area). A new genus, Sinaiosalenia, and two new species, Sinaiosalenia rhombohedralis (lower Cenomanian) and Globator aegyptiaca (middle Albian), both from Gebel El Tourkumanyia, are erected. Additionally, two species are recorded from Egypt for the first time: Emiratia raskhaimahensis Ali, 1990 and Pseudananchys ludovici (Fourtau, 1912).