| Micromomyidae | |
|---|---|
Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Plesiadapiformes |
| Family: | †Micromomyidae Szalay, 1974 |
| Genera[2] | |
Micromomyidae (Micromomids) is a family of extinctplesiadapiform mammals that include some of the earliest knownprimates.[3][4] The family includes fivegenera[5] that lived from thePaleocene epoch into the earlyEocene epoch.[4]
Micromomyids first appeared in the fossil record between 61.7 and 56.8 million years ago with theMicromomys genus. All but one specimen has been discovered in modern-day inlandNorth America, more specifically inWyoming,Alberta, andSaskatchewan,[5][6] with one unlabeled Eocene species found inShandong,China.[6]
Like other known Plesiadapiformes, it appears that the micromomyids were small,tree-dwellinginsectivores.[4][5][7] They are thought to be some of the smallest of their order, with estimates for some species around 10-40g,[4][7] or one-third to one and a half ounces, in weight.
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