地质通报2003，Vol.22Issue(4)：236-247,12.
Discovery of the Middle-Late Triassic elasmobranch ichthyoliths from the Guanling area, Guizhou, SW China
Discovery of the Middle-Late Triassic elasmobranch ichthyoliths from the Guanling area, Guizhou, SW China
摘要
Abstract
Abundant Middle-Late Triassic (Ladinian-Carnian) elasmobranch ichthyoliths (microscopic shark dermaldenticles and teeth) from the Zhuganpo and Xiaowa Formations in the Guanling area, Guizhou Province, south-western China, are described and illustrated. The fauna includes a single tooth possibly belonging to Hybodontidaeand 7 paragenera and paraspecies of dermal denticles, i.e.: Lobaticorona cf. floriditurris, Sacrisubcorona cf. circaba-sis, Glabrisubcorona cf. arduidevexa, Parvicorona dacrysulca n. gen. n. sp. s. f., Annulicorona pyramidalis n. gen.n. sp. s. f., and new (?) paragenera A and B. This is the first time that shark dermal denticles are reported fromthe Metapolygnathus polygnathiformis M. nodosus conodont zones. The application of microfossils of chondrichthyesin the strafgraphic division of the Triassic and the intercontinental correlation of Triassic chondrichthyes in south-western China and those in equivalent strata in North America are also discussed.关键词
法郎组/软骨鱼类/三叠纪/贵州关岭Key words
Chondrichthyes/Elasmobranchii ichthyoliths/Triassic/Carman, Guizhou分类
天文与地球科学引用本文复制引用
翟裕生..Discovery of the Middle-Late Triassic elasmobranch ichthyoliths from the Guanling area, Guizhou, SW China[J].地质通报,2003,22(4):236-247,12.基金项目
Project supported by China Geological survey. （）
