Thalamoporella tewarii Guha & Gopikrishna, 2004

Sonar, Mohan A., Pawar, Ravi V. & Wayal, Dyaneshwar V., 2022, Fossil Thalamoporellidae (Bryozoa) from Paleogene-Neogene sediments of western Kachchh, Gujarat, India, Zootaxa 5104 (2), pp. 251-274 : 266-267

Thalamoporella tewarii Guha & Gopikrishna, 2004

( Fig. 14 , Table 11 )

Thalamoporella tewarii Guha & Gopikrishna, 2004: 27 , figs 24, 25.

Material examined. GIS/B 0326–0352. Yellow limestone, Murachbann, 2 km from Walaram Teerthdham, Chhasra Formation, lower Miocene (Burdigalian), 23 ° 30’10” N, 68 ° 52’99” E, elevation 91–93 m, 13 January 2011, DST project, New Delhi .

Description. Colony erect, cylindrical, stems dichotomously branching. Autozooids elongate-rectangular, mostly parallel-sided, bordered by raised, smooth, thin boundaries ( Fig. 14A ). Orifice subcircular, the arcuate distal margin thin, raised, the proximal edge wide and concave. Adoral area narrow, lacking tubercles. Two large longitudinally oval opesiules present near lateral walls, equal or unequal, deeply sunken. Cryptocyst sloping into opesiular region, perforated, sparsely granular ( Fig. 14B ). Avicularia unknown.

Remarks. The present species accords with T. tewarii Guha & Gopikrishna, 2004 .

Figures

FIGURE 14. Thalamoporella tewarii Guha & Gopikrishna, 2004 (GIS/B 0326).A. General view of colony showing autozooids, orifices and large opesiules. B. Close up of autozooids, subcircular orifices, perforated cryptocyst and large opesiules. Scale bars: A, 200 µm; B, 100 µm.