1·The communities of Paleozoic plants congregated at the water's edge and began to colonize the Earth's surface.
大量的古生代植物聚集在水域边缘，并逐渐蔓延到地球的各个角落。
2·The Phanerozoic is divided into three eras -starting with the earliest, these are the Paleozoic, Mesozoic, and Cenozoic.
显生宙可划分为三个时期——依次经历古生代、中生代和新生代。
3·Most of the fossils seen in Paleozoic rocks are invertebrate animals lacking backbones, such as corals, mollusks and trilobites.
大部分在古生代岩层中发现的化石都是没有脊骨的无脊椎动物，例如珊瑚、软体动物和三叶虫。
4·The study was constructed to provide more insight into the effects a hyperoxic environment — like the kind our planet enjoyed in the late Paleozoic — might have had on animal gigantism.
开展这项研究是为了进一步掌握高氧环境(类似地球在古生代晚期的环境)对动物体型巨大产生的影响。
5·This was one of the first fossil algae to be described as such from Late Paleozoic rocks.
这是最早化石藻类之一，描述了这种从晚古生代岩石作为。