Simplify the following text for a Grade 13 native English-speaking person.
Original: Homo rudolfensis is a fossil hominin species discovered by Bernard Ngeneo , a member of a team led by anthropologist Richard Leakey and zoologist Meave Leakey in 1972 , at Koobi Fora on the east side of Lake Rudolf ( now Lake Turkana ) in Kenya .
Simplified: Homo rudolfensis is a fossil human species discovered by Bernard Ngeneo , a member of a team led by anthropologist Richard Leakey and zoologist Meave Leakey in 1972 , at Koobi Fora on the east side of Lake Rudolf ( now Lake Turkana ) in Kenya .