NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY
Cast of a Homo heidelbergensis mandible (lower jaw). The jaw this cast was made from was found in Mauer, near Heidelberg, Germany, in 1907. It dates to around 500,000 years ago. H. heidelbergensis is an extinct hominid that formed a relatively recent part of the human evolutionary tree.
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