Peacocks are classified in the phylum chordata , subphylum vertebrata , class aves , order galliformes , family phasianidae 孔雀被认为是脊索动物类，脊索动物亚门，鸟类。
2.
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 他们还认为节肢动物长尾纳罗虫( naraoialongicaudata ) 、刺状纳罗虫( naraoiospinosa )和耳形等刺虫( isoxysauritus )以及腕足动物东方日射水母贝( heliomedusaorienta ) 、线形虫动物圆筒帽天山蠕虫( maotianshaniacylindrica )均为次优势种，它们的个体数量分别占化石总数的百分之三到五。
