palaeozoic era古生代
Palaeozoic Alps古阿尔卑斯
palaeozoic formation古生界地层
lower palaeozoic下古生界
palaeozoic group古生界
PALZ PALAEOZOIC古生代
the palaeozoic古生代
palaeozoic bauxite古生代铝土矿
There occurred a progressive fall of sea level after the middle Late Cambrian,and the Early Palaeozoic first-order sea-level variation cycle was terminated at the end of the Silurian period.
中寒武世后为累进式海平面下降。 志留纪未结束早古生代海平面一级变化周期。
参考来源 - 扬子东南大陆边缘晚元古代—早古生代层序地层和盆地动力演化(英文)ADJ（形容词） of, denoting, or relating to an era of geological time that began 600 million years ago with the Cambrian period and lasted about 375 million years until the end of the Permian period 古生代的
N（名词） the Palaeozoic era 古生代时期