fossilize

1.Archaeologists excavated fossilized dinosaur tracks from the riverbed.

考古学家河床中挖掘出的足迹化石。

2.The fossilized remains belonged to the ornithopod (having legs or feet like those of a bird) family. said Jin Liyong, curator of the Museum of Jilin University.

残骸属于鸟脚亚目（象有腿和脚的鸟一样），据吉林大学博物馆馆长金利勇讲。