Zeitoun (2000) provided a phylogenetic analysis that included several specimens African early Homo. Based on the analysis Zeitoun (2000 p. 104) proposed two new species for taxa occupying an intermediate position between the more plesiomorphic Homo rudolfensis and more derived Homo ergaster. One of the newly established species was Homo okotensis with KNM-ER 3883 as the holotype. An explicit differential diagnosis was not provided unless one considers the chracter state designations as a tacit diagnosis, in which case the name is available and potentially valid.
