中国奥陶系■江阶、石口阶的候选层型剖面——湖南祁东双家口剖面(Ⅱ)
刘义仁 ,傅汉英
摘要(Abstract)：
<正> 1 Dicellograptus divaricatus rigidus zone (bed 257--227): This is a new fauna afterthe Nemagraptus gracilis fauna. The fauna is characterized by an abundance of long androbust Dicellograptids, such as Dicellograptus divaricatus rigidus, D. divaricatus and D.divaricatus robustus as well as short and slender Corynoides curtus. Orthograptid of thecalcaratus group, Dicranograptus nanus, D. brevicaulis, Pseudoclimacograptus scharenbergiand very abundance Climacograptus such as C. parvus. C. haddingi etc., and Neurograptus
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作者(Author): 刘义仁 ,傅汉英
DOI: 10.19839/j.cnki.dcxzz.1989.04.001