Fossil:

KNM-ER 3733

Source: Casts of original fossil

Site:

Koobi Fora (Upper KBS tuff, area 104)
Lake Turkana, Kenya (4, 1)

Discovered By:

B. Ngeneo
1975 (1)

Estimated Age of Fossil:

1.75 mya
* determined by Stratigraphic, faunal, paleomagnetic & radiometric data (1, 4)

Species Name:

Homo ergaster (1, 7, 8)
Homo erectus (3, 4, 7)
Homo erectus ergaster (25)

Gender:

Female (species presumed to be sexually dimorphic) (1, 8)

Cranial Capacity:

850 cc (1, 3, 4)

Information:

Tools found in same layer (8, 9)
Found with KNM-ER 406- A. boisei (effectively eliminating single species hypothesis) (1)

Interpretation:

Adult (based on cranial sutures, molar eruption and dental wear) (1)