Simplify the following text for a Grade 5 native English-speaking person.
Original: Homo erectus ( H erectus ) lived from about 1.8 Ma to about 70,000 years ago ( which would indicate that they were probably wiped out by the Toba catastrophe ; however , Homo erectus soloensis and Homo floresiensis survived it ) .
Simplified: Homo erectus lived lived from about 1.8 million to 70,000 years ago .