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 Uteria aff. merienda ( Elliott, 1968 ) Fig. 2b , 5b *1968 Clypeina merienda n. sp. – Elliott, p. 35, pl. 4, figs. 2-3, 7-8. 1982 Clypeina merienda Elliott – Deloffre and Génot, p. 51, pl. 3, figs. 6-7. 1990 Uteria merienda (Elliott) – Radoičić, pl. 10, fig. 5. Remarks: As the sections illustrated by Elliott (1968) from the Paleocene Sinjar Formation of Iraq were assigned to the genus Clypeina Michelin , they were interpreted as belonging to fertile laterals. “Reminiscent of Clypeina ”, they were referred to the sterile laterals of the genus Uteria Michelin showing two types of laterals, sterile and fertile ( Radoičić, 1990 ; Dieni et al., 1985 , p. 26). This type of thallus structure is well discernible in the longitudinal section illustrated in Figure 11a, a specimen from Eastern Iran (Sistan Suture Zone). There may be one or two fertile whorls between the disc-like whorls of sterile laterals. The specimens from the Chehel Kaman Formation refer exclusively to fragments of sterile laterals. A comparative table of the different Uteria species , excluding U. merienda , has been provided by Deloffre et al. (1989 , tab. 1). In fact, the new species described by Deloffre et al. (1989) as Uteria mexicana from the upper Paleocene can in our opinion not be differentiated distinctly from the Iraqi species and might be a possible junior synonym of the latter.