The species
Mimetodon churchilli was named by Jepsen G.L. in 1940. Remains were found in the Tiffanian (Middle Paleocene)-age
strata of Princeton Quarry in
Wyoming (United States). The
holotype is in the collection of the
Peabody Museum of Natural History at
Yale University. The species
Mimetodon krausei was named by Sloan R.E. in 1981. Remains were found in the Puercan (Lower Paleocene)-age strata of the San Juan Basin of
New Mexico (United States). This
holotype's also in the collection of the Peabody Museum, Yale. The species
? Mimetodon nanophus was named by Holtzman in 1978. It has also been known as
Neoplagiaulax nanophus (Holtzman 1978). Remains were found in the Middle-Upper Paleocene-age strata of the Tongue River Formation in
North Dakota (United States). This might be the same as
M. silberlingi. The species
Mimetodon silberlingi was named by Simpson G.G. in 1935 and Schiebout in 1974. It has also been known as
Ectypodus? silberlingi (Simpson 1935d);
Mesodma silberlingi (Van Valen & Sloan 1966); and
?M. nanophus. Remains were found in the Torrejonian-Tiffanian (Middle Paleocene)-age strata in the Gidley Quarry of
Montana and in Wyoming, North Dakota and
Alberta, Canada. This species weighed an estimated 20 g. == References ==