Fauna (noun)

1. All the animal life in a particular region or habitat.
2. A particular group of animals, especially those found in a specified region or period.
3. All the animal species that live in a particular area or time.
4. A book or collection of information about the animals of a particular region or period.

Origin:

Late 18th century: from latin, "animal life", from faunus "a rural deity".

Examples:

1. The Amazon rainforest has a rich and diverse fauna, including monkeys, parrots, and jaguars.
2. The fossilized fauna from the Cretaceous period included dinosaurs, marine reptiles, and ammonites.
3. The fauna of the Arctic includes reindeer, walruses, and polar bears.
4. The fauna of the African savanna includes lions, zebras, and elephants.
5. The fauna of the ocean includes whales, dolphins, and sharks.