Sibesibe, neon to wa ni oke ojuorun je ida 20 ninu egbegberun (parts per million) gegebi isupo, to je bi ikan ninu idamera bo se po to ninu Orun.. 
The Discovery and Description of this Species is Ctedted to both Mary and Louis Leakey, who found fossils in Tanzania, east Africa, between 1962 and 1964.. 