西秦岭礼县鲁班石一带石炭纪牙形刺新资料

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：Declinognathoduslaterahs,D.noduliferusnoduliferus,Gnathodusbilineatuscostiformis,G.bilineatusbilineatus,Gondolellagymna,G.xinjiangensis,Neognathodusbassleri,Neoprioniodusbarbatus,ldiognathodusclaviformis,I.delicatus,I.klapperi,ldiognathoidessinuatus,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。