The basic data for such a study are fossils (palaeontology) and the reconstruction of ancient environments.

Evolutionary adaptations to ancient environments persisted in all three species despite changing climate, distribution, and associated flora.

By looking at the ancient environments in which humans evolved, he says, it should be possible to see if certain illnesses offer protective advantages.

This is an invaluable tool in the reconstruction of ancient depositional environments.

The ancient depositional environment of the region around what is now the park varied.

This Museum explores the region's biodiversity, the stories of the indigenous Noongar people and ancient natural environment.

Students will record their findings in on-line journals, then submit hypotheses about the ancient environment they are studying.

Studying modern analogs allows geologists to draw conclusions about ancient environments.

Now people have any number of techniques for analyzing fossils and ancient environments.

The Hell Creek is the best studied of these ancient environments.