megafauna

The term is a modern scientific compound, formed in the 20th century by combining two classical elements. The first part, "mega-", derives from the ancient Greek word for "great" or "large," a concept with Proto-Indo-European roots in meǵh₂-, also meaning "great." The second part, "fauna," originates from the name of a Roman pastoral goddess, Fauna, later adopted into scientific Latin to denote the animal life of a region. The logic of the word is transparently descriptive: it literally means "large animals," created specifically to categorize and discuss the giant species, such as mammoths and giant sloths, that characterized prehistoric epochs or dominate certain ecosystems.

Structure: mega (large) + fauna (animals) - mega: From Greek megas (μέγας), meaning "great, large". In English, it functions as a combining form meaning "very large" or "one million times". - fauna: From Modern Latin Fauna, a Roman goddess of fertility and animals, sister of Faunus. It functions as a noun meaning "the animals of a particular region or time".