Microphotography of fossils at Pliocene marker levels.

wo species of Rotaliidea have been identified at several sites: Ammonia beccarii Linnaeus, 1758, at Imounsis, Illigh, and Tildi, and Elphidium crispum only at Illigh. Ammonia beccarii Linnaeus, 1758, is notable for its abundant distribution in several levels, particularly at level IMS-P4. It is sometimes associated with Ostracods and Elphidium crispum at the Illigh site, specifically in levels ILL-P12 and ILL-Q1.已在多个采样点鉴定出两种轮虫目（Rotaliidea）有孔虫：分别为分布于Imounsis、Illigh及Tildi点位的毕克卷转虫（Ammonia beccarii）Linnaeus, 1758，以及仅在Illigh点位发现的脆节房虫（Elphidium crispum）。毕克卷转虫（Ammonia beccarii）Linnaeus, 1758以其在多个地层中的广泛分布而引人注目，尤其在IMS-P4地层中丰度极高。在Illigh点位的ILL-P12与ILL-Q1地层中，该种有时会与介形类（Ostracods）及脆节房虫伴生。