Footprints are natural molds of dinosaur feet.
脚印是恐龙脚的天然模子。
Natural mold
原声例句
阿尔伯塔大学-恐龙古生物学
英语百科
Fossil
![](/Images/godic/202501/29/Palais_de_la_Decouverte_Tyrannosaurus_rex_p10500421135.jpg")
![Silicified (replaced with silica) fossils from the Road Canyon Formation (Middle Permian of Texas).](/Images/godic/202501/29/Permian_Silicified_Sclerobionts1135.JPG")
![External mold of a bivalve from the Logan Formation, Lower Carboniferous, Ohio](/Images/godic/202501/29/Aviculopecten_subcardiformis011135.JPG")
![Recrystallized scleractinian coral (aragonite to calcite) from the Jurassic of southern Israel](/Images/godic/202501/29/MatmorScleractinian1135.JPG")
Fossils (from Classical Latin fossilis; literally, "obtained by digging") are the preserved remains or traces of animals, plants, and other organisms from the remote past. The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous (fossil-containing) rock formations and sedimentary layers (strata) is known as the fossil record.
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