Reconstruction of "Heidelberg Man", Homo Heidelbergensis now used to refer to hominines intermediate between H. erectus and H. sapiens and H. neanderthalensis, and who lived from about 800,000 to about 300,000 years ago. H. heidelbergensis is morphologically very similar to Homo erectus but had a larger brain-case, about 93% the size of that of Homo sapiens. The holotype of the species was tall, 1.8 m and more muscular than modern humans.
Homo heidelbergensis (700,000 to 200,000 years ago.) by Sam_Wise, via Flickr. Photo of a bust in the National Museum of Natural History; Washington, D.C.. first discovered in 1908, near Heidelberg, Germany.
from left to right: Australopithecus, Early Homo erectus (Java Man), Late Homo erectus (Peking Man), Homo heidelbergensis (Rhodesian Man), Homo neanderthalensis (Neanderthals) and Early Homo sapiens (Cro-Magnons)
Five fossilized skulls show how the shape of the early human face evolved, from left to right - Australopithecus africanus, 2.5 million years old; Homo rudolfensis, 1.9 million years old; Homo erectus, 1 million years old; Homo heidelbergensis, 350,000 years old; Homo sapiens, 4,800 years old. Scientists believe that climate change had a major impact on the development of early humans.