a relic or the petrified remains of an animal or plant of a past geological age, preserved in the earth's crust
a person with outmoded views
something such as an outdated viewpoint or custom that has become rigidly fixed
an obsolete word or word element that only occurs in an idiom, such as fro in to and fro
fossiliferous adj
fossilization noun
fossilize verb
[Latin fossilis dug up, from fossus, past part. of fodere to dig]