Simplify the following text for a Grade 7 native English-speaking person.
Original: Zoologists and paleontologists use fauna to refer to a typical collection of animals found in a specific time or place , e.g. the `` Sonoran Desert fauna '' or the `` Burgess shale fauna '' .
Simplified: So one might speak of the Eocene fauna as being different from the Miocene fauna . Or , say , the fauna of a particular habitat .