西秦岭礼县鲁班石一带石炭纪牙形刺新资料

New material of Carboniferous conodonts from Lubanshi ,Lixian,West Qinling

报道了甘肃礼县鲁班石地区石炭纪地层中新获得牙形刺化石14属26种,其中12属22种为新发现,包括:De-clinognathoduslateralis,D.noduliferusnoduliferus,Gnathodusbilineatuscostiformis,G.bilineatusbilineatus,Gondolellagymna,G.xinjiangensis,Neognathodusbassleri,Neoprioniodusbarbatus,Idiognathodusclaviformis,I.delicatus,I.klapperi,Idiognathoidessinuatus,I.sulcatus,Lochrieacommutata,Ligonodinatypa,Lonchodinatarimensis,L.bischoffi,Lonchodussimplex,Streptognathodusexpansus,S.parvus,S.suberectus,Ozarkodinahindei。其中Streptognathodus,Declinognathodus,Neognathodus,Idiognathodus和Idiognathoides5属是上石炭统下部的代表分子,Streptognathodusgracilis和Gondolella属是上石炭统上部的代表分子。

This paper reports14genera and26species of conodonts in Carboniferous strata at Lubanshi ,Lixian.Of these,12genera and22species are for the first time reported,including Declinognathodus lat-eralis,D.noduliferus noduliferus,Gnathodus bilineatus costiformis,G.bilineatus bilineatus,Gondolella gymna,G.xinjiangensis,Neognathodus bassleri,Neoprioniodus barbatus,Idiognathodus claviformis,I.del-icatus,I.klapperi,Idiognathoides sinuatus,I.sulcatus,Lochriea commutata,Ligonodina typa,Lonchodina tarimensis,L.bischoffi,Lonchodus simplex,Streptognathodus expansus,S.parvus,S.suberectus,Ozarko-dina hindei.Among them,the genera Streptognathodus,Declinognathodus,Neognathodus,Idiognathodus and Idiognathoides are representative elements in the lower part of the Upper Carboniferous and the genera Streptognathodus gracilis and Gondolella are representative elements in the upper part of the Upper Car-boniferous.