| 1 | Late Ordovician and Early Devonian conodonts from Onoo Tolgoi area of Mongolia显示文摘Conodont samples were collected from three localities in the Onoo Tolgoi area,Mongolia, and many conodonts have been found. Conodonts from the Onoo Tolgoi Formation (M288-M294) lack index fossils; its age could be Late Silurian. Samples from the Hutul us hudag Formation (M295-M299) contain Ozarkodina pandora alpha Morph. (P element), clearly indicating that this formation is Early Devonian late Lochkovian in age. Samples collected from so-called Silurian Onoo Tolgoi Formation at other localities(M300-M303) yield many Ordovician conodonts, including Icriodella baotaensis, Icriodella cf.baotaensis, Eoplacognathus jianyeensis, Eoplacognathus protoramosus; Baltoniodus alobatus; and ?Ambalodus triangularis; the age is Late Ordovician,more precisely, early-middle Late Ordovician. | Chengyuan WANG Dorjsuren Byambadash Bujinlkham Boijir Yadamjav Dagva-Ochir Horlod Yadam Jiabin LANG | 2008 | Global Geology2008，11，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员