The Kanapoi collection of Rhinocerotidae, first studied by Hooijer and Patterson (1972), now consists of 25 specimens and substantial reinterpretation of their affinities is made here. Kanapoi post-dates the extinction of Brachypotherium and the whole collection belongs to the Dicerotini. It is important because it includes the type-specimen of Diceros praecox, a species that remains poorly known, but looks slightly larger and more primitive than the modern ‘black’ rhino, Diceros bicornis. A second species is probably ancestral to the modern ‘white’ rhino, Ceratotherium simum; it looks identical to the Pleistocene North African Ceratotherium mauritanicum, of which Ceratotherium efficax is probably a synonym. The evolution of the Dicerotini in Africa can be regarded as an increasing divergence in diet and related morphofunctional adaptations in the two lineages. The co-occurrence at Kanapoi of both Diceros and Ceratotherium, with distinct dietary preferences, suggests some habitat heterogeneity, although the low sample size prevents robust paleoecological conclusions.

The Equidae are also rare and consist mostly of isolated teeth. I take the most parsimonious option of tentatively including all of them in a single species, whose identification is left open. Dental features of eastern African Pliocene to Pleistocene hipparions may reflect increasing adaptation to grazing.

Hooijer和Patterson（1972）首次研究了Rhinocerotidae的Kanapoi收集品，现在收藏了25个标本，并在此重新诠释了它们的亲和力。Kanapoi追溯到Brachypotherium的灭绝，整个收藏都属于Dicerotini。这很重要，因为它包括Diceros praecox的类型标本，Diceros praecox是一个鲜为人知的物种，但看起来比现代的“黑”犀牛Diceros bicornis更大，更原始。第二种可能是现代“白”犀牛白犀（Ceratotherium simum）的祖先。看起来与更新世北非Ceratotherium mauritanicum，其中Ceratotherium efficax可能是同义词。Dicerotini在非洲的进化可以看作是两种谱系中饮食和相关形态功能适应性差异的增加。饮食差异明显的Diceros和Ceratotherium在Kanapoi的共存表明了某些栖息地的异质性，尽管低样本量阻止了强有力的古生态学结论。

马科动物也很稀少，主要由孤立的牙齿组成。我采取最简化的选择，将所有这些都暂时包含在一个物种中，这些物种的身份尚待确定。东非上新世至更新世的河马的牙齿特征可能反映了对放牧的适应性增强。