Acicularia sp. 1

SCHLAGINTWEIT, FELIX, RASHIDI, KOOROSH & MOSAVINIA, ABDOLMAJID, 2021, First Record Of Calcareous Green Algae (Dasycladales, Halimedaceae) From The Paleocene Chehel Kaman Formation Of North-Eastern Iran (Kopet-Dagh Basin), Acta Palaeontologica Romaniae 17 (1), pp. 51-64 : 53

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.

Figures

Fig. 4 Acicularia sp. 1 (a-i, l-o), diverse oriented sections. Note the regular palisade-like arrangement of elongated cysts in h and the presence of a central hollow in some specimens (e.g., d, m). Acicularia sp. 2 (j-k) displaying spherical cysts. Thin-sections: Nf 12-1 (a, k), Nf 12-2 (b, d-e, g-j), Nf 12-3 (c, l), Nf 12 (f, m-o).