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摘要
<正>化石是我们研究古代动植物的最直接途径。从化石中可以看到古代动植物的样子,从而可以推断出它们的生活情况和生活环境、生物从古到今的变化等等。What is a fossil?Simply put,a fossil is the remains or evidence of any creature or plant that once lived on the Earth.There are quite a few fossil classification systems in use today.Paleontologist Peter Larson and Kristin Donnan group fossils into two categories:Type I and Type II.Type I—The remains of the dead animal or plant or the imprint left from the remains.
