Boueina minima Bucur, Rashidi & Senowbari-Daryan

(Fig. 12f,g; Fig. 13d).

This udoteacean alga was also described from the Taft Formation by Bucur et al. (2012). Just as in the case of Pseudoactinoporella? iranica, it appears with two denominations: Boueina minima (in text, p. 625) and Boueina minuta (caption of Fig. 13) (Bucur et al., 2012, p. 627). Boueina minima is the correct denomination of this taxon since it is mentioned as such for the first time in the text. This species is now reported for the first time in carbonate deposits other than those from the type locality.

Udoteacean-gymnocodiacean algae showing characteristics of both Boueina-Arabicodium, and Permocalculus (Fig. 12e, j-m).

Some of the calcareous algae identified within the Tirgan Formation have ramified medullar and cortical filaments arranged in a manner similar to that described in Boueina and Arabicodium. At the same time, they also present a series of inflated, larger ovoid or ovoid-acuminated filaments. Such filaments are similar to the supposed reproductive organs of the gymnocodiacean algae. A similar alga is Boueina camenitzae (Dragastan & Bucur, 1979) which contains such sub-ovoid filaments in the subcortical zone. When the inflated filaments are elongated, confusion with Juraella bifurcata is possible. A revision of these gymnocodiacean-udoteacean algae is currently undertaken by Bucur & Schlagintweit.