Hegang coal field, of the type of a ( inland) faulted basin far from the sea, was formed in the early Neo-Jurassic age about 140 million years ago. Late Triassic and Early Jurassic Ammonoids from Eastern Himalayas 鹤岗煤田约形成于一亿四千多万年前的晚侏罗世初期,是远海内陆断陷盆地型煤田。东喜马拉雅地区晚三叠世&早侏罗世的菊石类
HIMALAYAN TECTONIC EVOLUTION IN THE PERI-PACIFIC REGION OF EAST ASIA Late Triassic and Early Jurassic Ammonoids from Eastern Himalayas 东喜马拉雅地区晚三叠世&早侏罗世的菊石类
Remains of more modern corals, diverse pelecypods, sea urchins and ammonoids characterize the marine strata of the Mesozoic Era. 中生代生物的特征是出现较现代的珊瑚,各种各样的瓣鳃,海胆和菊石。
Carboniferous ammonoids from eastern Xinjiang 新疆东部石炭纪菊石
In Permian period, the favourable conditions of paleogeographical environment within the boundaries of Guangxi made two sets of ecotypic ammonoids living in the "open sea" and "restricted sea" multiply and develop. 二叠纪时,在广西境内有利的古地理环境条件下,使开阔海、局限海两套生态类型菊石得以繁衍发育。
Uppermost permian ( changhsingian) ammonoids from western Guizhou 贵州西部晚二叠世长兴期菊石
New materials of Late Permian ammonoids from southeastern Hubei 鄂东南晚二叠世菊石新材料