Complex sentence: Rhodesian man is dated between 125,000 and 300,000 years old and is typically designated as a member of the Homo heidelbergensis, though other designations such as archaic Homo sapiens and Homo sapiens rhodesiensis have also been proposed.
Split into simpler sentences: Rhodesian man is dated between 125,000 and 300,000 years old. Most current experts believe Rhodesian Man to be within the group of "Homo heidelbergensis" though other designations such as archaic "Homo sapiens" and "Homo sapiens rhodesiensis" have also been proposed.