A lot cephalopoda fossils were found in the section of dolomite with limestone, which belong to early Ordovician.
于白云岩夹灰岩之层段发现大量的头足类化石，其时代属早奥陶世。
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This article gives a general introduction to the role of Cephalopoda in China ocean fishery, its biological characteristics, aquaculture research achievements and exploitation prospect.