Abstract
ABSTRACT The taxonomic revision of several species belonging to Marginulina and Marginulinopsis genera revealed that some of these species belonging to genus Percultazonaria and led to erect new species. These new species are Percultazonaria nodosa, P. seminodosa and P. unnodosa that were recorded in the Esna Shale and Egma Limestone through the Paleocene-early Eocene interval in El Hasana area, central Sinai, Egypt.
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