Tetrapaurinella sphaerica Tekin, n. sp. (Fig. 8 P-V) urn:lsid:zoobank.org:act: C4E6F19D-A746-43DA-9A55-5480C9F33969 HOLOTYPE. — Sample Orbuk-32, HU.JMB.0127 (Fig. 8P). PARATYPES. — HU.JMB.0128 (Fig. 8Q), HU.JMB.0129 (Fig. 8R), HU.JMB.0130 (Fig. 8S), HU.JMB.0131 (Fig. 8T), HU.JMB.0132 (Fig. 8U), HU.JMB.0133 (Fig. 8V). TYPE LOCALITY. — Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. ETYMOLOGY. — Due its sphaerical cortical shell. OCCURRENCE. — Lower Jurassic, upper Hettangian-lower Sinemurian of Orbuklukeli section, Mersin Mélange, NW of Mersin city, southern Turkey. DIMENSIONS (based on seven specimens, in µm).- Maximum diameter of test: 100-140 (holotype: 138, average: 123.3); Length of the longest spine: 80-100 (holotype: 100, average: 93). DESCRIPTION Shell flat to slightly inflated, spongy consisting of several layers around the micropshaere and four primary spines at right angles situated in one plane or, sometimes, slightly inclined (Fig. 8P). Surface of the shell with numerous pores of different size. Primary spines needle-like, subcircular in transverse section, slightly gradually tapering, and pointed. REMARKS This species differs from the Triassic species Tetrapaurinella latispinosa Kozur & Mostler (1994: 77, pl. 16, fig. 9; pl. 17, figs 4, 6) by possessing a much smaller shell by comparison with primary spines and slightly larger pores.

Published as part of Tekin, Kagan, Krystyn, Leopold, Okuyucu, Cengiz, Bedi, Yavuz & Sayit, Kaan, 2020, Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T / J boundary and sedimentary evolution of the southern margin of the northern Neotethys, pp. 493-537 in Geodiversitas 42 (27) on page 513, DOI: 10.5252/geodiversitas2020v42a27, http://zenodo.org/record/4447758