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item typeAnimalorderPrimatefamilyNotharctinae
 
 
Notharctus

Notharctus

Notharctus was an early primate that inhabited Europe and North America 50 million years ago. Modern lemurs evolved from primates similar to this genus. The body form of Notharctus is similar to that of modern lemurs. Unlike lemurs, however, Notharctus had a shorter face and forward-facing eyes surrounded by an enclosed circle of bone. Its fingers were elongated for clamping onto branches, including the development of a thumb.

 
 
Smilodectes

Smilodectes

Smilodectes is an extinct genus of primate that lived in Wyoming. It possesses a post-orbital bar and grasping thumbs and toes. Smilodectes has a small cranium size and the foramen magnum was located at the back of the skull, on the occipatal bone. It appears during the Eocene epoch, and is thought to be related to lemurs.

 
 
Notharctus tenebrosus

Notharctus tenebrosus

Notharctus tenebrosus was an early primate from the early Eocene, some 54-38 million years ago. Its fossil was found by Ferdinand V. Hayden in 1870 in southwestern Wyoming. When first found, Notharctus tenebrosus was thought to be a small pachyderm due to the concentration of pachyderm fossils in the area. However, after Walter W. Granger's discovery of a nearly complete skeleton, also in Wyoming, it was firmly established as a primate.

 
 
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Pelycodus

Pelycodus is an extinct Adapiform primate that lived during the early Eocene period in North America, specifically Wyoming and New Mexico. It is very closely related to Cantius and may even be its subgenus. It may also have given rise to the Middle Eocene Uintan primate Hesperolemur, although this is controversial. From mass estimates based on the first molar, the two species, P. jarrovii and P.

 
 
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Cantius frugivorus

Cantius frugivorus was a small adapiformes primate that lived in the early Eocene in North America. It is more advanced than the plesiadapiformes.