Early Eocene orthophragminids and alveolinids from the Jafnayn Formation, N Oman: significance of Nemkovella stockari Less & Özcan 2007 in Tethys - Özcan, Ercan; Abbasi, İftikhar Ahmed; Drobne, Katica; Govindan, Abiraman; Jovane, Luigi; Boukhalfa, Kamel (Geodinamica Acta, 2016)