这是因为古生物学的核心就是将过去和现在的生物相互对比。
This is because, at its core, palaeontology works by comparing past and present organisms with each other.
法国解剖学家，对比解剖学、古生物学的著名创始者。
French anatomist, celebrated as the founder of comparative anatomy and paleontology.
概要的总结了东北区中生代地层中古生物群，以及它们在岩石地层单位中的分布，借以说明岩石地层的时代，为地层多重划分对比提供了依据。
The Mesozoic biota and their distribution in lithostratigraphic units in northeastern China are summed up to suggest the age of the units and to be the basin for multiple classification of strata.
然后，结合传统的标志层法、煤岩学及古生物学方法，对该区主要煤层进行对比。
Later in the paper, a correlation between the main coal-seams in this province is made, in combination with the traditional method of the key bed, coal petrography and palaeontology.
这些化石不仅丰富了本区植物化石组合内容，而且对地层时代的确定及与邻区的对比和沉积环境的恢复提供了重要的古生物依据。
These fossils not only enrich the content of the plant fossil assemblage in the study area but also provide an important paleontological basis for the determination of stratigraphic ages,...
这些化石不仅丰富了本区植物化石组合内容，而且对地层时代的确定及与邻区的对比和沉积环境的恢复提供了重要的古生物依据。
These fossils not only enrich the content of the plant fossil assemblage in the study area but also provide an important paleontological basis for the determination of stratigraphic ages,...
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