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Notharctinae
Temporal range: Early-Middle Eocene
Notharctus tenebrosus
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Primates
Suborder:
Strepsirrhini
Family:
†Notharctidae
Subfamily:
†Notharctinae Trouessart, 1879
Genera
†Cantius
†Copelemur
†Hesperolemur
†Notharctus
†Pelycodus
†Smilodectes
Notharctinae is an extinct subfamily of primates that were common in North America during the early and middle Eocene (55-34 million years ago). The six genera that make up the group (Cantius, Pelycodus, Copelemur, Hesperolemur, Notharctus, and Smilodectes) contain species that are among the most primitive of the adapiform group, which is one of the most primitive groups of primates. The evolutionary history of this subfamily has been comparatively well documented and has been used to argue for evolutionary gradualism. Though it is generally accepted that adapiforms gave rise to modern day lemurs and lorises, it is not currently known which branch of Adapiformes these living species are most closely related to. Notharctines became extinct in the middle Eocene, most likely because of a combination of factors including climatic change and competition with other North American primates.
Notharctinae is an extinct subfamily of primates that were common in North America during the early and middle Eocene (55-34 million years ago). The six...
subfamilies: Adapinae, Notharctinae, and sometimes Sivaladapinae. All North American adapiforms were lumped under Notharctinae, while the Old World forms...
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...
non-elongated tarsus and numerous premolar and molar crests and within Notharctinae because of its four premolars, unfused mandible, a hypocone derived from...
Cantius frugivorus is a species of adapiform primate that lived in North America during the early Eocene. This species had a dental formula of 2.1.4.32...
PMID 819339. Covert, H. H. (1990). "Phylogenetic relationships among the Notharctinae of North America". American Journal of Physical Anthropology. 81 (3):...
(2021). "A dense sample of fossil primates (Adapiformes, Notharctidae, Notharctinae) from the Early Eocene Willwood Formation, Wyoming: Documentation of...
Gingerich, P. D. (2023). "Phylogeny and Evolution of North American Notharctinae (Mammalia, Primates) in the Early Eocene of Wyoming". Contributions from...
OCLC 47254191. Covert, H. 1990. Phylogenetic Relationships among the Notharctinae of North America. American Journal of Physical Anthropology. Vol. 81...
early Eocene of New Mexico and southern Wyoming and the phylogeny of Notharctinae. American Journal of Physical Anthropology 75(4). 439–469. . Honey, J...
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