cephalochordata 中文意思是什麼
cephalochordata
解釋
全索亞門-
The former is a kind of brachiopod and the latter belongs to vermes. the fossils of each sub - dominant species took its place from three percent to five percent in quantity. on one hand, the fossils of early vertebrata, hemichordata, urochordata, cephalochordata and vetulicolian which connects invertebrata and vertebrata have been caught one by one in the continuous excavating work of early life institute field work team of north west university since 1996
他們還認為節肢動物長尾納羅蟲（ naraoialongicaudata ） 、刺狀納羅蟲（ naraoiospinosa ）和耳形等刺蟲（ isoxysauritus ）以及腕足動物東方日射水母貝（ heliomedusaorienta ） 、線形蟲動物圓筒帽天山蠕蟲（ maotianshaniacylindrica ）均為次優勢種，它們的個體數量分別占化石總數的百分之三到五。 -
Amphioxus, an existing animal that belongs to the phylum chordata, subphyla cephalochordata, is always regarded as the invertebrates which is the nearest to the vertebrates. it has great sense on the research of how the vertebrates develop from invertebrates
長久以來，文昌魚一直被認為是現存的與脊椎動物親緣關系最近的無脊椎動物（ stokeandholland ， 1998 ; zhangetal . ， 2001 ） ，在脊椎動物如何由無脊椎動物進化而來這一著名的生物學難題中占據重要的位置。
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