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Synopsis 13 Introduction 13 Outline of geology and fossil localities 14 Faunal Associations 22 Overall palaeoecology 26 Systematic palaeontology 27 Linguloidea 28 Discinoidea 28 Siphonotretoidea 30 Craniopsoidea 30 Strophomenoidea 30 Plectambonitoidea 38 Chilidiopsoidea 53 Triplesioidea 53 Protorthoidea 58 Orthoidea 58 Plectorthoidea 61 Enteletoidea 64 Camarelloidea 64 Rhynchotrematoidea 74 Lissatrypoidea 76 Meristelloidea 76 Acknowledgments 77 References 77 The brachiopod fauna from the Anderken Formation (Lower to Middle Caradoc) of the Chu-Ili Range, south-eastern Kazakhstan, is revised and described systematically. It consists of 62 species in 55 genera, of which the genera Tesikella, Olgambonites and Zhilgyzambonites (all Plectambonitoidea) and Ilistrophina (Camarelloidea) are new, and the species Bellimurina (Bellimurina) sarytumensis, Teratelasmella chugaevae, Foliomena prisca, Acculina kulanketpesica, Dulankarella larga, Kajnaria rugosa, Anoptambonites convexus, Olgambonites insolita, Zhilgyzambonites extenuata, Gacella institata, Placotriplesia spissa, Grammoplecia wrighti, Dolerorthis pristina, Austinella sarybulakensis, Plectorthis? burultasica, Bowanorthis? devexa, Pionodema opima, Parastrophina iliana, Ilistrophina tesikensis, Liostrophia pravula, Plectosyntrophia unicostata, Rhynchotrema akchokense and Nikolaispira guttula are new. Six brachiopod-dominated assemblages are recognised and defined, termed the Ectenoglossa, Tesikella, MabellaSowerbyella, AcculinaDulankarella, ParastrophinaKellerella and ZhilgyzambonitesFoliomena Associations. The relationships with contemporary faunas are assessed, and the Anderken brachiopods appear to have much in common with those of north-west China. |
