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 Canoptum merum Pessagno & Whalen, 1982 ( Fig. 11Q ) Canoptum merum Pessagno & Whalen, 1982: 124 , pl. 1, figs 1, 15, 16, 20; pl. 12, fig. 11. — Carter et al. 1998: 64-65 , pl. 16, fig. 3. — Tekin 2002a: 189 , pl. 4, fig. 8. OCCURRENCE. — Upper Triassic, Rhaetian-Lower Jurassic, lower Sinemurian of Queen Charlotte Islands, British Columbia , Canada ; East-central Oregon , United States ; Antalya Nappes, NE of Antalya City and Mersin Mélange, NW of Mersin city, southern Turkey .