? Tretosina gen. et sp. indet.

Fig. 10; Table 9

Material examined

INDIA • 11 specs; yellow limestone of the south of Walaram Tirth Dham near Murachbann, Aquitanian, lower Miocene, Kharinadi Formation; 23°39′15″ N, 68°58′02″ E; Jan.–Feb. 2012; Pawar leg.; GIS/B 0522 to 0532.

Description

Colony erect with six zooidal series. Zooids hexagonal, arranged quincuncially in alternating longitudinal rows, bordered by thin raised, smooth mural rim (Fig. 10A). Opesia oval, less than ½ length of the zooid. Cryptocyst tuberculated, descending into the opesia narrowing proximally. Distal arch smooth, thin and raised (Fig. 10B). Spines, avicularia and ooecia not observed.

Remarks

In these Kachchh specimens, the median cryptocystal process and ooecium typical of Tretosina were not observed making even genus-level attribution difficult. So, the genus is left in open nomenclature until better preserved material is available.