The book Ordovician Fossils of North China was written by author Grabau, Amadeus W. (Amadeus William), 1870-1946 Here you can read free online of Ordovician Fossils of North China book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Ordovician Fossils of North China a good or bad book?
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Bulletin of the Geological Survey of China. No, 7. (ii) 10 Palseontologia Sinica Ser. B. Orthoceras chinense Foord Orthoceras regulare Schlotheim Orthoceras squamatulum Barrande Orthoceras thyrsus'^ Barrande Orthoceras yangtzeense Yii Orthoceras? wongi Yii Protocycloceras deprati Reed 2. Eastern Hupeh: The stratigraphical work of eastern Hupeh had been done by Mr. Seijiro Noda^ , but his classification was found incorrect by Messrs. Hsieh and Liu who were sent by the Geological Survey of China ...to study the geology of Yang-sing and other districts^ in the autumn of 1923. They reported that the Ordovician limestone at these localities is very thick and gray in colour. Because it was first found at Ta-fang village in Yang-sing district, the Ordovician formation is called Tafang limestone. Its actual thickness is unknown, because the basal part is not exposed. Some Orthoceras and brachiopods are found in the limestone, and are very abundant together with some trilobites in a layer of purple calcareous shale about 20 m.
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