Orioporella malaviae Pia 1936

Barattolo, Filippo, Abad, Morteza Taherpour Khalil & Introduction, Mehdi Ashrafi, 2014, Dasycladalean Fossil Green Algae From The Maastrichtian-Paleocene Of Balkh Province (N Afghanistan), Acta Palaeontologica Romaniae 10 (1 - 2), pp. 1-2 : 92

Orioporella malaviae Pia 1936

Fig. 10 d, g

This taxon is well recorded in the Paleocene, probably occurring in the SB1 (upper part) - SB3 interval ( Barattolo, 1998). The alga is found as isolated discs. The oblique section of Fig. 10 d clearly shows the perforated upper and lower walls of the fertile disc, whereas the partitions between gametangia are imperforate.

Figures

Fig. 10 a-c, e, f Cymopolia sp., a, two articles in oblique section, b, e, f, sterile specimens in oblique sections, c, fertile specimen in subtransversal section. d, g Orioporella malaviae Pia, d, oblique section of a whorl, notice the perforate calcareous wall; g, tangential section. Thin section: a-g, Sh6 (= BA.4258). Age and locality: Paleocene, environs of Kholm (N Afghanistan)