The geologist discovered a fossiliferous rock formation during the excavation.

The scientist carefully fossilises the ancient bones.

The process of fossilising takes millions of years.

Fossilology is a fascinating field of study that explores the history of life on Earth through the examination of fossils.

Fossilogy is an important field of study for understanding the history of life on Earth.

The ancient tree trunk fossilified over millions of years.

The process of fossilifying takes millions of years.

The ancient tree was fossilified over millions of years.

The ancient tree fossilifies over millions of years.

Fossilhood is a term used to describe the state of being fossilized.