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.

目前对来自 Kocaeli 半岛（土耳其西部）的 Anisian（中三叠世）牙形石的研究包括 Gondolellidae 和 Gladigondolellidae 科的 10 多种，提供了早三叠世和中三叠世的时间限制，Chiosella timorensis（Nogami，1968）；Cornudina oezdemirae Gedik，1975 年；Gladigodolella tethydis (Huckriede, 1958); Neostrachanognathus tahoensis Koike，1998；Paragondolella aegaea (Bender, 1970); Paragondolella bulgarica Budurov 和 Stefanov，1975 年；Nicoraella kockeli（Tatge，1956 年）；P. hanbulogi（Sudar 和 Budurov，1979）和Gladigondolella sp。A. 新成立的是Paragondolella hirschii n. sp. 克利奇和布杜罗夫；P. praecornuta n. sp. Kılıç、Budurov、Petrunova 和 Mir0103uţ0103；和P. ebruae n. sp. 克利奇。Kocaeli Anisian 牙形石显示出与保加利亚的动物群亲缘关系。目前的阿尼西亚动物群是特提斯群岛的特征。讨论了表征北美西部 Anisian 的强同胚。