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 Author Tekin, Kagan Author Krystyn, Leopold Author Okuyucu, Cengiz Author Bedi, Yavuz Author Sayit, Kaan text Geodiversitas 2020 2020-11-26 42 27 493 537 journal article 10.5252/geodiversitas2020v42a27 20141273-3452-4388-b6a8-aab9193c87fe 1638-9395 4447758 urn:lsid:zoobank.org:pub:1A437774-B5BE-49F2-8DEF-D46F2790484A Thurstonia gibsoni Whalen & Carter in Carter, Whalen & Guex, 1998 ( Fig. 7 K-M) Thurstonia gibsoni Whalen & Carter in Carter, Whalen & Guex, 1998: 42 , pl. 6, figs 1-2. — Hori et al. 2004: pl. 5, fig. 6. — Goričan et al. 2006: 378-379 , pl. THU01, figs 1, 2,?3. Thurstonia sp. aff. T. gibsoni – Tekin 2002a: 188 , pl. 3, fig. 20. OCCURRENCE. — Lower Jurassic, lower Hettangian-upper Hettangian of Queen Charlotte Islands, British Columbia , Canada ; Guwayza Formation, Oman ; Japan ;? Antalya Nappes, NE of Antalya city and Mersin Mélange, NW of Mersin city, southern Turkey . REMARKS Although, this species was reported from slightly younger strata (Pliensbachian) in the Tawi Sadh Member of the Guwayza Formation, Oman ( Goričan et al. , 2006 ), the assignment of this specimen is not clear, if we compare it to the holotype . Because of this, we followed the range (middle to upper Hettangian) of this taxon reported by Carter et al. (1998) .