Homo heidelbergensis, also Homo rhodesiensis, is an extinct species of the genus Homo which lived in Africa, Europe and western Asia between 600 and 200 thousand years ago. The skulls of this species share features with both Homo erectus and anatomically modern Homo sapiens, its brain was nearly as large as that of Homo sapiens.
Here is a stamp issued by South Africa on November 10, 2006, depicting Homo heidelbergensis skull founded in Elandsfontein, SA and its reconstruction:
The first discovery, a jaw, was made in 1907 in Mauer near Heidelberg in Germany where it was described by Otto Schoetensack from Heidelberg University and was named Homo heidelbergensis.
Here is a postmark depicting the Homo heidelbergensis jaw founded in Mauer near Heidelberg, issued by Germany in 1982 to commemorate the 75th anniversary of the discovery:
The PC was sent from Mauer, the H. heidelbergensis jaw discovery site:
The Steinheim skull is a fossilized skull of a Homo heidelbergensis found in 1933 near Steinheim an der Murr, Germany, hence, it is also called Homo steinheimensis. The skull is estimated to be 250,000–350,000 years old. The original fossil is housed in the State Museum of Natural History in Stuttgart, Germany.
I don't know a stamp depicting the H. steinheimensis skull and all I have in my collection is the following meter from the Steinheim an der Murr, Germany publicizing an exhibition about Homo steinheimensis:
