Micropora vredenburgi Guha & Gopikrishna, 2005

Sonar, Mohan A., Pawar, Ravi V. & Wayal, Dnyaneshwar V., 2022, Newly discovered species of cheilostomatid Bryozoa from the Miocene of western Kachchh, Gujarat, India, European Journal of Taxonomy 821, pp. 16-39 : 30

Micropora vredenburgi Guha & Gopikrishna, 2005

Fig. 9 ; Table 8

Micropora vredenburgi Guha & Gopikrishna, 2005d: 147 , pl. III figs 2–3.

Material examined

INDIA • 6 specs; yellowish limestone at cliff section of Waior-Charopadi stream near Waghot , Burdigalian, lower Miocene, Chhasra Formation; 23°25′55″ N, 68°42′40″ E; Jan.–Feb. 2012; Pawar leg.; GIS/B 0516 to 0521 .

Description

Colony encrusting, unilaminar. Autozooecia vase shaped or subhexagonal, arranged quincuncially ( Fig. 9A ). Cryptocyst extensive, flat, surface coarsely granular and with fine pseudopores, slightly bulging in middle, sinking distally and near opesiules, bordered by thick, raised mural rim. Opesiules small, slit like, placed at proximolateral corners of orifice near lateral margins. Orifice semielliptical, wider than long, arched distally, proximal edge concave. Ooecia small, semi-immersed, smooth, with semicircular frontal surface ( Fig. 9B ). Avicularia not observed.

Remarks

All the essential characters agree with Micropora vredenburgi Guha & Gopikrishna, 2005 . However, the interzooecial avicularia observed by Guha & Gopikrishna (2005) were not noticed in the present specimens.

Figures

Fig. 9. Micropora vredenburgi Guha & Gopikrishna, 2005 (GIS/B 0516). A. General view of the colony showing subhexagonal autozooid. B. Close-up of an autozooids showing orifices opesia, opesiules, thick mural rims and ooecia.