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(Top) 1 Classification and phylogeny 1.1 Taxonomy 2 See also 3 References

Machaeroidinae

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Machaeroidinae Temporal range: 52.4–39.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N early to middle Eocene

skull of Machaeroides eothen

lower jaw of Apataelurus kayi
Scientific classification
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
Genera
†Apataelurus †Diegoaelurus †Isphanatherium †Machaeroides Incertae sedis: †Machaeroidinae sp. (CM 2386) †Machaeroidinae sp. (FMNH PM 1506) †Machaeroidinae sp. (USNM 173514)

A map showing the fossil finds of machaeroidinid genera.
Synonyms
list of synonyms: Machaeroididae Machaeroidini (Van Valen, 1966)^[2] Machairoidinae (Matthew, 1909)

Machaeroidinae ("dagger-like") is an extinct subfamily of carnivorous sabre-toothed placental mammals from extinct family Oxyaenidae, that lived from the early to middle EoceneofAsia and North America.^[3] Traditionally classified as hyaenodonts, this group is now classified as a member of the family Oxyaenidae.^[4]^[5]^[6]

Classification and phylogeny[edit]

Taxonomy[edit]

Subfamily: †Machaeroidinae (Matthew, 1909)
- Genus: †Apataelurus (Scott, 1937)
  - †Apataelurus kayi (Scott, 1937)
  - †Apataelurus pishigouensis (Tong & Lei, 1986)
- Genus: †Diegoaelurus (Zack, Poust & Wagner, 2022)^[7]
  - Diegoaelurus vanvalkenburghae (Zack, Poust & Wagner, 2022)
- Genus: †Isphanatherium (Lavrov & Averianov, 1998)
  - Isphanatherium ferganensis (Lavrov & Averianov, 1998)
- Genus: †Machaeroides (Matthew, 1909)
  - †Machaeroides eothen (Matthew, 1909)
  - †Machaeroides simpsoni (Dawson, 1986)

References[edit]

^ 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.

^ Zack, Shawn P.; Poust, Ashley W.; Wagner, Hugh (2022-03-15). "Diegoaelurus, a new machaeroidine (Oxyaenidae) from the Santiago Formation (late Uintan) of southern California and the relationships of Machaeroidinae, the oldest group of sabertooth mammals". PeerJ. 10: e13032. doi:10.7717/peerj.13032. ISSN 2167-8359. PMC 8932314. PMID 35310159.

Mammals of clade Pan-Carnivora

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Placentalia
Superorder: Laurasiatheria
Clade: Scrotifera
Grandorder: Ferungulata
Mirorder: Ferae

Pan-Carnivora

Carnivoramorpha	See Carnivoramorpha below ↓
†Hyaenodonta	See Hyaenodonta below ↓
†Oxyaenodonta	See Oxyaenodonta below ↓
†Wyolestidae	†Wyolestes
†Simidectes †Altacreodus †Tinerhodon

†Hyaenodonta

†Afro‑Arabian
clade

†Maocyon/Orienspterodon clade

†Maocyon
†Orienspterodon

†Apterodontinae

†Apterodon
†Quasiapterodon

†Hyainailourinae

†Akhnatenavus clade

†Hyainailourini

†Prionogalidae

†Teratodontinae

other representatives

†Arfia clade

†Arfia

†Galecyon clade

†Galecyon

†Lahimia clade

†Boualitomus
†Lahimia

†Limnocyonidae

†Iridodon
†Limnocyon
†Oxyaenodon
†Prolaena
†Prolimnocyon
†Thinocyon

†Sinopidae

†Acarictis
†Prototomus
†Sinopa

ichnotaxa
of Hyaenodonta

†Oxyaenodonta

†Oxyaenidae

†Machaeroidinae	†Apataelurus †Diegoaelurus †Isphanatherium †Machaeroides
†Oxyaeninae	†Argillotherium †Dipsalidictis †Malfelis †Oxyaena †Patriofelis †Protopsalis †Sarkastodon
†Palaeonictinae	†Ambloctonus †Dipsalodon †Palaeonictis
†Tytthaeninae	†Tytthaena