Coral fauna across the Cretaceous–Paleogene boundary at Zagros and Sistan Suture zones and Yazd Block of Iran

Abstract From the upper Maastrichtian (Tarbur Fm.) and Paleocene of Iran, 20 species scleractinian corals belonging to 17 genera 14 families, one octocoral Heliopora are newly recorded. Furthermore, coral previously described from Tarbur Fm. revised included in evaluation, resulting a total 37 28 families (including 3 subfamilies) for Iranian K/Pg-boundary time period. The majority taxa (21 out = 57%) crossed K/Pg-boundary. Acropora Stylocoeniella recorded strata older than Paleogene (upper Maastrichtian) first time; Lobopsammia it is report Eocene (Selandian‒Thanetian). vast occurring both Iran have been reported variety reefal non-reefal paleoenvironments. On level, slight endemic (14 27 52%). In contrast, cosmopolitan subcosmopolitan; only 4 during Paleocene. While fauna shows greatest affinities contemporaneous assemblages Europe Caribbean, most closely related associations central Asia, Europe, North America.