Macrotarsius is an extinct genus of omomyid that inhabited North America and East Asia during the Eocene epoch.

Macrotarsius contains five species: the type species M. montanus, M. jepseni, M. macrorhysis, M. roederi, and M.

siegerti.

[1] Macrotarsius macrorhysis lived in Jiangsu, China during the Middle Eocene.

[2]