But it is difficult to apply the rule to ancient fossils.
I wonder how those ancient fossils of people have survived for so long.
Most ancient fossils are from bones, not organs or soft tissue.
As Cuvier began to study the more ancient fossils, he found that they were increasingly unlike anything known in the world today.
The zygnadr must have been modelled on this ancient fossil.
She found herself standing alone in the alley before the station house: that ancient, hideous fossil which had grown so familiar.
The dancers couldn't possibly understand the story of their world, the meaning of the ancient fossils.
You are disturbing some of the ancient fossils who have come to the grill room for their crackers and milk.
Paleontology (with several ancient fossils and the dinosaurs section).
Abiotic defenders state that biomarkers get into oil during its way up as it gets in touch with ancient fossils.