11. These were the remains of Homo heidelbergensis . 12. Scientists have deduced Homo heidelbergensis 's height and frame from the Heidelberg jawbone and the tibia found at Boxgrove. 13. Smith said the fossils would probably turn out to be either early Homo heidelbergensis or late Homo erectus. 14. The fossil was dubbed the " Galilee skull " and was eventually classified as " Homo heidelbergensis ". 15. In 1933 Wilhelm Freudenberg discovered a frontal bone fragment which too, could be associated to " Homo heidelbergensis ". 16. The intermediate may have been " Homo heidelbergensis ", held responsible for the manufacture of improved " Mode 2" 17. These are thought to have been made by the Neanderthals ancestors, " Homo erectus " or " Homo heidelbergensis ". 18. Some researchers suggest that the finds associated to " Homo heidelbergensis " are mere variants of " Homo erectus ". 19. Any form of segregation is considered arbitrary, which is why these researchers forgo the name " Homo heidelbergensis " altogether. 20. More than 125, 000 years ago, early Archaic Homo sapiens such as Homo heidelbergensis developed the extensive use of hafted stone tools.