Discussion of the phylogenetic relations between Plesippus, Allohippus, and Equus. Descriptions illustrations 30 Equid extant fossil species younger than 2 Ma. Particular attention is given to slender forms with short protocones usually referred ‘Equus altidens’ from Süssenborn Untermassfeld (Germany), Akhalkalaki Dmanisi (Georgia), Pirro (Italy), Venta Micena (Spain) Aïn Hanech (Algeria). Occu...