paleontologistA scientist who studies the history of life on Earth through the fossil record.
Definitions:
A scientist who studies the forms of life existing in prehistoric or geologic times, as represented by the fossils of plants, animals, and other organisms."Dr. Challenger, a paleontologist, discovers a plateau in South America populated by prehistoric creatures."
plateauAn area of high ground, with a flat terrain.
Definitions:
A land area having a relatively level surface considerably raised above adjoining land on at least one side."The Lost World is predominantly set on an isolated plateau in the Amazon jungle."
expeditionA journey undertaken by a group of people with a particular purpose, especially that of exploration or research.
Definitions:
A journey or voyage made for some specific purpose, as of war or exploration."Professor Challenger leads an expedition to verify his claim about the existence of prehistoric life in 'The Lost World'."
evolutionThe process by which different kinds of living organisms have developed and diversified from earlier forms during the history of Earth.
Definitions:
Any process of formation or growth."The discovery of prehistoric creatures on the plateau provided a unique perspective on evolution."
apexThe top or highest part of something.
Definitions:
The tip, point, or vertex; summit"The explorers reached the apex of the mountain where they could view the entire plateau."