He is very interested in paleontology.

Studying Old Norse helps to deeply understand the history of the Vikings.

He keeps a Mongolian horse.

He is an expert in paleography, and he is good at deciphering ancient handwritten documents.

Palaeoclimatology is the science that studies the past climate of the Earth.

He is an expert in paleobotany.

He is an expert in paleobotany, conducting research on plants from the dinosaur era.

He is an expert in paleozoology and has a deep knowledge about the ecology of dinosaurs.

Paleoecology is a field of study that investigates the relationship between past organisms and their environment.

Paleogeography is a study that researches the past geographical conditions of the Earth.