Simplify the following text for a Grade 9 native English-speaking person.
Original: There are 52 species divided among two orders , the Acipenseriformes ( sturgeons and paddlefishes ) and the Polypteriformes ( reedfishes and bichirs ) .
Simplified: There are 52 species divided among two orders . The orders are the Acipenseriformes ( sturgeons and paddlefishes ) , and the Polypteriformes ( reedfishes and bichirs ) .