Simplify the following text for a Grade 8 native English-speaking person.
Original: H. floresiensis , which lived from approximately 100,000 to 12,000 before present , has been nicknamed hobbit for its small size , possibly a result of insular dwarfism .
Simplified: Homo floresiensis , which lived about 100,000 â `` 12,000 years ago has been nicknamed hobbit for its small size .