Gastropods from the Campanian–Maastrichtian Aruma Formation, Central Saudi Arabia

Journal Article

• المجلة \ الصحيفة: Journal of African Earth Sciences
• رقم الإصدار السنوي: 103
• الصفحات: 128–139

مستخلص المنشور

The gastropod fauna of the Upper Cretaceous Aruma Formation in central Saudi Arabia comprises fifteen
species belonging to fifteen genera, fourteen families, and five clades. The species are not abundant at any
individual stratigraphic level but are equally and irregularly scattered in the formation. The studied species
come mainly from the Hajajah Member of Upper Cretaceous Aruma Formation in central Saudi Arabia.
Calliomphalus orientalis (Douvillé, 1916); Coelobolma corbarica Cossmann, 1918; Turritella (Torquesia)
figarii Quaas, 1902; Neoptyxis olisiponensis (Sharpe, 1850) and Otostoma (Otostoma) divaricatum (d’Orbigny,
1847) are recorded from the Upper Cretaceous of central Arabia for the first time. The identified species
have a close affinity to the Tethyan fauna known from other parts in Asia, Africa and Europe.
Herbivores and predators are the dominant trophic groups which may indicate shallow marine lagoonal
and relatively open marine environment.