| Machaeroidinae Temporal range: early to middle Eocene
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| skull cast of Machaeroides eothen | |
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| lower jaw of Apataelurus kayi | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Clade: | Pan-Carnivora |
| Order: | †Oxyaenodonta |
| Family: | †Oxyaenidae |
| Subfamily: | †Machaeroidinae Matthew, 1909[1] |
| Type genus | |
| †Machaeroides Matthew, 1909
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| Genera | |
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| A map showing the fossil finds of machaeroidinid genera. | |
| Synonyms | |
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list of synonyms:
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Machaeroidinae ("dagger-like") is an extinct subfamily of carnivorous sabre-toothed placental mammals from extinct family Oxyaenidae, that lived from the early to middle Eocene of Asia and North America.[3] Traditionally classified as hyaenodonts, this group is now classified as a member of the family Oxyaenidae.[4][5][6]
- ^ W. D. Matthew (1909.) "The Carnivora and Insectivora of the Bridger Basin, middle Eocene." Memoirs of the American Museum of Natural History 9:289-567
- ^ L. Van Valen (1967.) "New Paleocene insectivores and insectivore classification." Bulletin of the American Museum of Natural History 135(5):217-284
- ^ Malcolm C. McKenna, Susan K. Bell: Classification of Mammals: Above the Species Level in Columbia University Press, New York (1997), 631 Seiten. Machaeroidinae
- ^ Zack, S. (2014). "Saber-tooth origins: a new skeletal association and the affinities of Machaeroidinae (Mammalia, Creodonta)". Journal of Vertebrate Paleontology, Program and Abstracts: 259–260.
- ^ Shawn P. Zack (2019). "A skeleton of a Uintan machaeroidine 'creodont' and the phylogeny of carnivorous eutherian mammals". Journal of Systematic Palaeontology. 17 (8): 653–689. doi:10.1080/14772019.2018.1466374. S2CID 89934728.
- ^ Shawn P. Zack (2019). "The first North American Propterodon (Hyaenodonta: Hyaenodontidae), a new species from the late Uintan of Utah". PeerJ. 7: e8136. doi:10.7717/peerj.8136. PMC 6876642. PMID 31772846.