Isohyaenodon

Isohyaenodon Temporal range: 20.0–13.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N Early to Middle Miocene
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Hyaenodonta
Family:	†Hyainailouridae
Subfamily:	†Hyainailourinae
Tribe:	†Hyainailourini
Subtribe:	†Isohyaenodontina Lavrov, 1999^[1]
Genus:	†Isohyaenodon Savage, 1965
Type species
†Isohyaenodon andrewsi Savage, 1965^[2]
Species
†I. andrewsi (Savage, 1965) †I. zadoki (Savage, 1965)
Synonyms
synonyms of subtribe: Isohyaenodontini (Lavrov, 1999) synonyms of species: I. andrewsi: Hyaenodon andrewsi (Savage, 1965) I. zadoki: Isohyaenodon matthewi (Savage, 1965) Hyaenodon matthewi (Savage, 1965) Metapterodon zadoki (Savage, 1965) Pterodon zadoki (Van Valen, 1967)^[3]

Isohyaenodon ("equal to Hyaenodon") is an extinct polyphyletic genus of hyainailourid hyaenodont mammal from the subfamily Hyainailourinae). Remains are known from early to middle Miocene deposits in Kenya, East Africa.

Description

Isohyaenodon is distinguished from Hyaenodon in having more robust molars, lower molars with a subequal paraconid and protoconid, and upper molars with a more well-developed protocone.^[4]

Classification and phylogeny

Taxonomy

Isohyaenodon was considered possibly the same genus as Leakitherium from the same region by Van Valen (1967), but subsequent studies have rejected this assumption.^[5]^[6]

Isohyaenodon pilgrimi Savage, 1965 was formerly assigned to this genus, but has been renamed Exiguodon pilgrimi.^[6]

References

^ A. V. Lavrov (1999.) "Adaptive Radiation of Hyaenodontinae (Creodonta, Hyaenodontidae) of Asia." in 6th Congress of the Theriological Society, Moscow, April 13–16, p. 138 [in Russian].
^ R. J. G. Savage (1965.) "Fossil Mammals of Africa: The Miocene Carnivora of East Africa." Bulletin of the British Museum (Natural History) Geology 10(8):241-316
^ L. Van Valen (1967.) "New Paleocene insectivores and insectivore classification." Bulletin of the American Museum of Natural History 135(5):217-284
^ J. Morales, M. Pickford and D. Soria (1998.) "A new creodont Metapterodon stromeri nov. sp. (Hyaenodontidae, Mammalia) from the Early Miocene of Langental (Sperrgebiet, Namibia)." Comptes Rendus de l'Academie des Sciences, Serie II. Sciences de la Terre et des Planetes 327(9):633-638.
^ Floréal Solé; Eli Amson; Matthew Borths; Dominique Vidalenc; Michael Morlo; Katharina Bastl (2015). "A New Large Hyainailourine from the Bartonian of Europe and Its Bearings on the Evolution and Ecology of Massive Hyaenodonts (Mammalia)". PLOS ONE. 10 (9): e0135698. Bibcode:2015PLoSO..1035698S. doi:10.1371/journal.pone.0135698. PMC 4580617. PMID 26398622.
^ ^a ^b Jorge Morales; Martin Pickford (2017). "New hyaenodonts (Ferae, Mammalia) from the Early Miocene of Napak (Uganda), Koru (Kenya) and Grillental (Namibia)" (PDF). Fossil Imprint. 73 (3–4): 332–359. doi:10.2478/if-2017-0019. S2CID 31350436.

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

†Hyaenodontoidea

†Hyaenodontidae	†Alienetherium †Boritia †Cartierodon †Consobrinus †Cynohyaenodon †Eurotherium †Hyaenodon †Leonhardtina †Matthodon †Neosinopa †Oxyaenoides †Paenoxyaenoides †Paracynohyaenodon †Praecodens †Preregidens †Prodissopsalis †Propterodon †Protoproviverra †Quercytherium

†Proviverridae

†Allopterodon
†Lesmesodon
†Minimovellentodon
†Morlodon
†Parvagula
†Proviverra

†Afro‑Arabian
clade

†Parvavorodon
†Tritemnodon
†Koholia

†Indohyaenodontidae

†Glibzegdouia
†Indohyaenodon
†Yarshea

†Hyainailouroidea

†Hyainailouridae

†Maocyon/Orienspterodon clade

†Maocyon
†Orienspterodon

†Apterodontinae

†Apterodon
†Quasiapterodon

†Hyainailourinae

†Leakitherium †Megistotherium †Mlanyama †Metapterodon †Pakakali †Paroxyaena †Simbakubwa
†Akhnatenavus clade	†Akhnatenavus †Hemipsalodon †Ischnognathus
†Hyainailourini	†Exiguodon †Falcatodon †Hyainailouros †Parapterodon †Sectisodon †Sivapterodon †Isohyaenodon †Kerberos †Pterodon

†Prionogalidae

†Namasector
†Prionogale
†Thereutherium

†Teratodontinae

†Anasinopa
†Brychotherium
†Buhakia
†Dissopsalis
†Ekweeconfractus
†Furodon
†Kyawdawia
†Masrasector
†Metasinopa
†Paratritemnodon
†Teratodon

other representatives

†Eoproviverra †Gazinocyon †Pyrocyon
†Arfia clade	†Arfia
†Galecyon clade	†Galecyon
†Lahimia clade	†Boualitomus †Lahimia
†Limnocyonidae	†Iridodon †Limnocyon †Oxyaenodon †Prolaena †Prolimnocyon †Thinocyon
†Sinopidae	†Acarictis †Prototomus †Sinopa

ichnotaxa
of Hyaenodonta

†Creodontipus
†Dischidodacylus
†Sarcotherichnus
†Zanclonychopus
†Hyaenodontipus
†Quiritipes
†Sarjeantipes

†Oxyaenodonta

†Oxyaenidae

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

Carnivoramorpha

Carnivoraformes
(Clade "A")

Clade "B"

†Messelogale †Miocyon †Simamphicyon †Uintacyon †Xinyuictis †Zodiocyon
†Quercygalidae	†Quercygale
†Gracilocyon/Oodectes clade	†Eogale †Gracilocyon †Oodectes †Paramiacis †Paroodectes

Clade "C"

Clade "D"

†Ceruttia
†Harpalodon
†Lycarion
†Neovulpavus
†Procynodictis
†Prodaphaenus
†Tapocyon
†Walshius

Carnivora
(Clade "E")

Caniformia	(See Caniformia)
Feliformia	(See Feliformia)

other representatives

†Africtis
†Dawsonicyon
†Miacis

ichnotaxa of
Carnivoraformes

†Falcatipes

†Viverravoidea

†Viverravidae

†Orientictis †Pappictidops †Preonictis †Variviverra
†Didymictinae	†Bryanictis †Didymictis †Intyrictis †Pristinictis †Protictis †Raphictis
†Ictidopappinae	†Ictidopappus
†Viverravinae	†Simpsonictis †Viverravus †Viverriscus