Early Miocene

“Incisor fossils of Aprotodon(Perissodactyla, Rhinocerotidae) from the Early Miocene Shangzhuang Formation of the Linxia Basin in Gansu, China”. Vertebrata

Martin Pickford (2010). “A new genus of tragulid ruminant from the early Miocene of Kenya”. Acta Palaeontologica Polonica 55 (2): 177–187. doi:10.4202/app

D55–D61.  McKenna, M.C.; Love, J.D. (1972). “High-level strata containing early Miocene mammals on the Bighorn Mountains, Wyoming”. American Museum Novitates

and Wang, Banyue, 2005. Hyaenodonts and Carnivorans from the Early Oligocene to Early Miocene of Xianshuihe Formation, Lanzhou Basin, Gansu Province, China

Mathias Harzhauser, Andreas Kroh & Stjepan Ćorić (2009). “A giant early Miocene sunfish from the North Alpine Foreland Basin (Austria) and its implication