Taxonomy
Matthew and Granger (1925) described the nominal tapiroid taxa ''Colodon inceptus'' and ''Paracolodon curtus'' from Eocene-age deposits in East Asia. Radinsky (1965) recognized two nominal species as identical and synonymized ''Paracolodon'' with ''Colodon inceptus''. Dashzeveg and Hooker (1997) assigned the nominal tapiroid species ''"Helalestes" fissus'' to ''Colodon'', as ''C. fissus'', based on similarities with ''inceptus''. On the basis of new material from the Erlian Basin in Inner Mongolia, Bai et al. (2017) recognized ''Paracolodon'' as a distinct genus from ''Colodon'', meaning that ''P. fissus'' is a referred species of ''Paracolodon''.Bai B, Wang Y Q, Mao F Y et al., 2017. New material of Eocene Helaletidae (Perissodactyla, Tapiroidea) from the Irdin Manha Formation of the Erlian Basin, Inner Mongolia, China and comments on related localities of the Huheboerhe Area. Am Mus Novit, 3878: 1–44.References
Helaletidae Prehistoric tapirs Eocene Perissodactyla Eocene mammals of Asia Fossil taxa described in 1925 {{paleo-oddtoedungulate-stub