Abstract
An unusually diverse fauna of biserial graptolites has been recovered from the Kajrak and Urubulak formations in the Kurama Range of eastern Uzbekistan. The fauna consists of 26 distinct taxa, 24 of which are systematically described and illustrated. The entire fauna can be assigned to theAkidograptus ascensus–Parakidograptus acuminatusBiozone, which is earliest Rhuddanian (early Llandovery) in age. Within this biozone, however, three regionally distinguishable subzones can be recognized, theN. lubricus, A. cuneatusandH. sinitzinisubzones. New taxa described areNormalograptus larini, Normalograptus skeliphrus, “Paraclimacograptus” kiliani kuramaensis, “Glyptograptus” jerini, and“Glyptograptus” ugurensis.New combinations described areNormalograptus acceptus(Koren’ and Mikhaylova, 1980),Normalograptus bicaudatus(Chen and Lin, 1978),Normalograptus jideliensis(Koren’ and Mikhaylova, 1980),Normalograptus lubricus(Chen and Lin, 1978),Normalograptus mirnyensis(Obut and Sobolevskaya, 1967), andSudburigraptus illustris(Koren’ and Mikhaylova, 1980).
Published Version
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