•
Parectypodus armstrongi (Johnston, P.A. & Fox, R.C., 1984). From the
Puercan (
Paleocene)
Ravenscrag Formation, site Rav W-1,
Saskatchewan, Canada. This specimen resides in the collection of the
University of Alberta. •
Parectypodus foxi (Storer, J.E., 1991). This Maastrichtian (Late Cretaceous)-age species from the
Frenchman Formation of Saskatchewan is estimated to have weighed about 80 g. •
Parectypodus laytoni (Jepsen, G.L., 1940; Sloan, R.E., 1966), also known as
Ectypodus laytoni (Jepsen 1940). Remains are known from the Lower
Tiffanian (Middle-Late Paleocene) Princeton Quarry,
Wyoming (United States). This species has been cited as a descendant of
P. sinclairi. It is a small species, having a weight of perhaps 10 g. •
Parectypodus lunatus (Krause, D.W., 1982), also known as
P. childei (Kühn, 1969). From the
Wasatchian (Lower Eocene) Pocket Quarry of
Colorado and Wyoming. This is a late species, having a weight of about 35 g. •
Parectypodus simpsoni (Jepsen, G.L., 1930). Eocene. •
Parectypodus sinclairi (Lamb, 1902; Clemens, 1964a). Known from the Puercan-Torrejonian (Paleocene) of Gidley Quarry,
Montana, Wyoming, and
Alberta, Canada. This species has been cited as having been derived from
Mesodma formosa. It is a smaller species of about 15 g. •
Parectypodus sloani (Schiebout, J.A., 1974). Fossils of this species have been found in the
Torrejonian (Paleocene)-age beds of
Big Bend,
Texas. •
Parectypodus sylviae (Rigby, J.K., 1980; Sloan, J.E., 1987) (=
Ectypodus aphronorus (Sloan 1987),
P. pattersoni (Sloan 1987)). Remains are known from the Torrejonian (Paleocene)-age Swain Quarry of Montana and Wyoming. The body weight of this species has been estimated as 15 g. •
Parectypodus trovessartianus (Cope, E.D., 1882; Van Valen & Sloan, 1966). From the Puercan-Torrejonian (Paleocene) of the
San Juan Basin,
New Mexico. The body mass of this species has been estimated to have been around 90 g. •
Parectypodus vanvaleni (Sloan, J.E. 1981). From the Puercan (Paleocene) of the San Juan Basin, New Mexico. == References ==