Matthew and Granger (1925) described the nominal tapiroid taxa Colodon inceptus and Paracolodon curtus from Eocene-age deposits in East Asia.[1] Radinsky (1965) recognized two nominal species as identical and synonymized Paracolodon with Colodon inceptus.[2] Dashzeveg and Hooker (1997) assigned the nominal tapiroid species "Helalestes" fissus to Colodon, as C. fissus, based on similarities with inceptus.[3] 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.[4]
References
^Matthew, W.D., and W. Granger. 1925. New ungulates from the Ardyn Obo Formation of Mongolia
with faunal list and remarks on correlation. American Museum Novitates 195: 1–12.
^Radinsky, L.B. 1965a. Early Tertiary Tapiroidea of Asia. Bulletin of American Museum of Natural History 129 (2): 181–263.
^Dashzeveg, D., and J.J. Hooker. 1997. New ceratomorph perissodactyls (Mammalia) from the Middle and Late Eocene of Mongolia: their implications for phylogency and dating. Zoological Journal of the Linnean Society 120: 105–138.
^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.
