The Bartonian freshwater limestone deposits at Eocliff and Eoridge, immediately west of the Klinghardt Mountains in the Sperrgebiet, southwestern Namibia, have yielded an impressive quantity of well preserved micromammals and gastropods (land and freshwater snails). Large mammal remains are rare, but during 2014 the partial skull of a large hyracoid was found, and during the 2015 field survey, a maxilla of the anthracothere Bothriogenys was recovered. The microfaunas, especially the rodents, of which there are at least 8 genera, indicate that the limestones accumulated slightly earlier than the oldest mammalian levels of the Fayum, Egypt (Priabonian) meaning that the deposits are likely to be Bartonian. A new genus and species of hyracoid is described from Eoridge, which is attributed to the family Titanohyracidae. Keywords: Sperrgebiet, Namibia, Eocene, Hyracoidea, Titanohyracidae.