Orienspterodon

Orienspterodon Temporal range: Middle to Late Eocene
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Hyaenodonta
Superfamily:	†Hyainailouroidea
Family:	†Hyainailouridae
Subfamily:	†Hyainailourinae
Genus:	†Orienspterodon Egi, 2007
Type species
†Orienspterodon dahkoensis Chow, 1975
Synonyms
synonyms of genus: Chinapterodon (Lavrov, 1999) synonyms of species: O. dahkoensis: Chinapterodon dahkoensis (Lavrov, 1999) Pterodon dahkoensis (Chow, 1975) Pterodon dakoensis (Lavrov, 1999)

Orienspterodon ("eastern Pterodon") is an extinct genus of hyainailourid hyaenodonts from paraphyletic subfamily Hyainailourinae that lived in China and Myanmar during the middle to late Eocene. Orienspterodon dahkoensis was originally assigned to genus Pterodon in 1975, but was eventually assigned to its own genus in 2007.

Phylogeny

The phylogenetic relationships of genus Orienspterodon are shown in the following cladogram.

†Hyaenodonta	†Eoproviverra       1†Boualitomidae           †Arfiidae     †Limnocyonidae       †Sinopidae       †Hyaenodontoidea         †Gazinocyon     †Pyrocyon       †Galecyon    †Afro‑Arabian clade      †Indohyaenodontidae     †Glibzegdouia       †Parvavorodon         †Koholiidae     †Tritemnodon       †Furodon     †Kyawdawia     †Paratritemnodon     †Teratodontidae     †Hyainailouroidea   †Apterodontinae        †Orienspterodon  †Orienspterodon dahkoensis         †Hyainailourinae     †Hemipsalodon    ?  †Ischnognathus   †Akhnatenavus clade     †Akhnatenavus       †Paroxyaenini     †"Pterodon" sp. (BC 15’08)     †Hyainailourinae sp. (UON 84-359)     †Hyainailourinae sp. C (DPC 9243 & DPC 10315)     †Hyainailourinae sp. D (DPC 6545)         †Hyainailourinae sp. A (DPC 6555)     †"Pterodon" africanus     †Parapterodon       †"Pterodon" sp. (DPC 5036)     †"Pterodon" phiomensis   †Hyainailourini         †Kerberos     †"Pterodon" syrtos   †Pterodon clade     †Pterodontina           †Falcatodon     †Sectisodon       †Exiguodon     †Isohyaenodon zadoki           †Isohyaenodon  (†Isohyaenodontina)   †Isohyaenodon andrewsi       †Sivapterodon     †Hyainailouros bugtiensis         †Hyainailouros napakensis   †Hyainailouros       †Hyainailouros sulzeri     †Hyainailourinae sp. (GSN AD 100’96)       †Simbakubwa         †Leakitheriini     †Megistotherium         †Mlanyama     †Metapterodontini         †Pakakali     †Prionogalidae	†Lahimia clade †Arfia clade †Galecyon clade †Indohyaenodon clade †Tritemnodon clade †Kyawdawia clade †Hyainailouridae