Anisian (Middle Triassic) Conodonts of the Kocaeli Triassic, Western Turkey

Abstract

The present study of Anisian (Middle Triassic) conodonts from the Kocaeli Peninsula (western Turkey) encompasses over 10 species of the families Gondolellidae and Gladigondolellidae, providing Early and Middle Triassic time constraints, Chiosella timorensis (Nogami, 1968); Cornudina oezdemirae Gedik, 1975; Gladigondolella tethydis (Huckriede, 1958); Neostrachanognathus tahoensis Koike, 1998; Paragondolella aegaea (Bender, 1970); Paragondolella bulgarica Budurov and Stefanov, 1975; Nicoraella kockeli (Tatge, 1956); P. hanbulogi (Sudar and Budurov, 1979), and Gladigondolella sp. A. Newly established are Paragondolella hirschii n. sp. Kılıç and Budurov; P. praecornuta n. sp. Kılıç, Budurov, Petrunova and Mir0103uţ0103; and P. ebruae n. sp. Kılıç. The Kocaeli Anisian conodonts show a faunal affinity with Bulgaria. The present Anisian fauna is characteristic of the Tethys. The strong homeomorphy that characterizes the Anisian in western North America is discussed.

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Acknowledgments

The author expresses his thanks to Prof. Ismet Gedik (Trabzon, Turkey) for his help in the field, Dr. Lyudmila Petrunova (Sofia, Bulgaria) for her help during the author’s stay in Sofia (Bulgaria), Dr. Tzvetoslav Hristov Iliev (Sofia, Bulgaria) for taking SEM micrographs, Dr. Cüneyt Bircan (Balikesir, Turkey) for his drafting skills in preparing the figures, and especially to Dr. Martyn Lee Golding (Vancouver, Canada) for assisting him with this paper. Last but not least, the author expresses his gratitude to the late Prof. Kyril Budurov (Sofia, Bulgaria), who guided him during his doctoral thesis, and to Prof. Francis Hirsch (Naruto, Japan) for discussing taxonomic and paleogeographic questions during his stay in Tokushima (Japan). The final publication is available at Springer via https://doi.org/10.1007/s12583-020-1384-9.

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Correspondence to Ali Murat Kılıç.

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Kılıç, A.M. Anisian (Middle Triassic) Conodonts of the Kocaeli Triassic, Western Turkey. J. Earth Sci. 32, 616–632 (2021). https://doi.org/10.1007/s12583-020-1384-9

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Key words

  • Triassic
  • Anisian
  • Aegean
  • Bithynian
  • conodonta
  • Gebze (Kocaeli)