New ruminants (Mammalia) from the Pliocene of Kanapoi, Kenya, and a revision of previous collections, with a note on the Suidae

• New material and revision of collections leads to substantial changes in faunal list.
• A new species of the alcelaphin Damalacra is named.
• Similarities with southern African faunas are fewer than previously implied.
• Kanapoi also differs from geographically close Kenyan localities.
• We hypothesize biogeographic connections with more remote sites to the northwest.

We describe here new ruminant material and revise previous collections from the Pliocene site of Kanapoi in northwestern Kenya, at c. 4 Ma., leading to substantial changes in the identifications and faunal list. Tragelaphins are the most common bovids; reduncins are quite rare if present; hippotragins are probably represented by a form previously unknown from Kenya; the alcelaphin Damalacra is represented by a new species; and an antilopin is possibly related to Dytikodorcas. We remove the suid Notochoerus cf. euilus from the list. Similarities with the South African site of Langebaanweg are more distant than previously implied, but the Kanapoi ruminant fauna bears no close relationship with other eastern African Pliocene assemblages.