Search

KNM-ER 3886 is an isolated left upper deciduous second molar attributed to Paranthropus boisei. It has the very high division of the roots and the extreme palatal projection of the lingual root which characterizes deciduous molars [1]. It was found in Area 104 of Koobi Fora at 4m below the A2 marker and is dated to ~1.78 Ma [2][3].

KNM-ER 6128 is a right upper premolar, probably P³ classified, as from a Paranthropus boisei. There is some damage to the tips of the cusps, but this appears to be post-mortem. The roots are nearly fully developed but not quite closed, and it is likely that this tooth was in the process of erupting [1]. It was found in Area 104 of Koobi Fora, 4m below the A2 marker and is  dated to ~1.78 Ma [2][3].

KNM-ER 3733 is a relatively complete Homo ergaster cranium discovered in situ by Bernard Ngeneo in 1975 in Area 104 of the Koobi Fora formation in Kenya. The supraorbital tori being just exposed on the surface. The maxillary and facial skeleton was fragmented and exposed within a distance of about 50cm from the vault. Tooth crowns and an assortment of small fragments were recovered by sieving the area immediately below the skull. The cranium is large with only a slight postorbital constriction. The supraorbital tori are prominent, protruding anteriorly[1].

KNM-ER 3885 is an isolated right upper fourth premolar (P₄) crown classified as that from a Paranthropus boisei. This tooth is broader than it was long [1]. It was found in Area 104 of Koobi Fora at 8m below the A2 marker [2].