First Record Of Calcareous Green Algae (Dasycladales, Halimedaceae) From The Paleocene Chehel Kaman Formation Of North-Eastern Iran (Kopet-Dagh Basin) Author SCHLAGINTWEIT, FELIX Lerchenauerstr. 167, 80935 Munich, Germany felix.schlagintweit@gmx.de Author RASHIDI, KOOROSH 2 Department of Geology, Yazd University, 89195 - 741 Yazd, Iran kooroshrashidi@yazd.ac.ir Author MOSAVINIA, ABDOLMAJID Department of Geology, Payame Noor University, Tehran, Iran, Po Box 19395 - 3697 text Acta Palaeontologica Romaniae 2021 2021-01-18 17 1 51 64 http://dx.doi.org/10.35463/j.apr.2021.01.06 journal article 10.35463/j.apr.2021.01.06 1842-371x 10520821 Acicularia sp. 1 Fig. 4 a-i, l-o Remarks: The longitudinal sections of the relative largesized spicules (length up to 2.0 mm) are straightrectangular (thickness ~ 0.3 mm ), sometimes with a small central hollow and with close-set elongated cysts (width 0.08-0.15) of palisade-like appearance. This morphotype is the most common observed in the studied samples. It is typically associated with Jodotella veslensis Morellet & Morellet , Neomeris plagnensis Deloffre and Halimeda ? sp.