Abstract
AbstractUpper Ordovician strata exposed from the Baiyanhuashan section is the most representative Late Ordovician unit in the northwestern margin of the North China Craton (NCC). In total, 1,215 conodont specimens were obtained from 24 samples through the Wulanhudong and Baiyanhuashan formations at the Baiyanhuashan section. Thirty-six species belonging to 17 genera, includingTasmanognathus coronatusnew species, are present. Based on this material, three conodont biozones—theBelodina confluensBiozone, theYaoxianognathus neimengguensisBiozone, and theYaoxianognathus yaoxianensisBiozone—have been documented, suggesting that the Baiyanhuashan conodont fauna has a stratigraphic range spanning the early to middle Katian. The Baiyanhuashan conodont fauna includes species both endemic to North China and widespread in tropical zones, allowing a reassessment of the previous correlations of the Katian conodont zonal successions proposed for North China with those established for shallow-water carbonate platforms at low latitudes.UUID:http://zoobank.org/7cedbd4a-4f7a-4be6-912f-a27fd041b586
Published Version
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