D2280 and D2282 are the two oldest hominid skulls of a series of 5 found one the paloptolgical site of Dmanisi, Georgia. Aged 1.8 millions years old, Cite error: The <ref> tag has too many names (see the help page). the are in the middle of a paleontogital controversy. For this controversy ( many hominoids are all erectus) read the main article Dmanisi Skull. They are also part one the finding that double the presume age of the human migration outside Africa. ^{[1] [2]}

Description of the skulls

The of Cranial length of D2280 is 177mm.

Variation on the skulls.

For the leading palotonpologist on the proejct, the two skulls (D2280 and D2282) were belong to the exact same population, the were found in the same stratum 4 meters appart. On of the firts puplication, the variation between the skulls enoyed scientift. Science 7 July 2000:Vol. 289. no. 5476, pp. 55 – 56 DOI: 10.1126/science.289.5476.55b; They tried to classified Dmanisi skull within afrian classical classical classification ( hergaster, habilis, erectus) but face some problems. The conclosion of the 2000 studies is that the morphological differences cannot be Explained ( page 56). ^[3].

Those 2 skulls led the scientitist to examine differences in morphology and in dentition between african, and European skull. Without any answers for more then 10 years, the discovery of 3 others skulls at the same site led to a major scientific controversy: many 
hominids fossils thought to be different species, such as 
Homo ergaster or 
Homo habilis may not have been separate species at all. Most human ancestors were quite possibly one evolving 
lineage.
[1] To know more on this controversy, read the article of the 
Dmanisi skull 5 Wikipedia article. 

References

The two fr hominid crania (D2280 and D2282) from the Georgian

Science 7 July 2000:Vol. 289. no. 5476, pp. 55 – 56 DOI: 10.1126/science.289.5476.55b;

^[1]