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Hyotheridium Temporal range: Santonian–Campanian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Genus:	†Hyotheridium Gregory & Simpson, 1926
Species:	†H. dobsoni
Binomial name
†Hyotheridium dobsoni Gregory & Simpson, 1926

Hyotheridium is a possible Eutherian from the Late Cretaceous (?late Santonian–early Campanian) Djadochta Formation of Mongolia. It also could be a Deltatheriid, although the fossil, a poorly preserved skull with the upper and lower jaws connected in a way that makes them hard to separate and to examine, makes it difficult to determine what it is.

References

1. "MESOZOIC MAMMALS; Basal Eutheria Two, an internet directory". Archived from the original on 2011-06-07. Retrieved 2008-05-04.

v t e Eutheria
Kingdom: Animalia Phylum: Chordata Class: Mammalia Subclass: Theria Synapsida see Synapsida Cynodontia see Cynodontia Mammalia see Mammalia Eutheria see below↓ Eutheria
Eutheria †Acristatherium? †Ambolestes? †Bayshinoryctes †Bobolestes? †Cokotherium? †Durlstodon †Durlstotherium †Endotherium †Eomaia? †Hovurlestes †Hyotheridium? †Indoclemensia †Juramaia? †Microtherulum? †Montanalestes? †Murtoilestes? †Prokennalestes? †Sinodelphys? †Adapisoriculidae Adapisoriculus Afrodon Bustylus Deccanolestes? Garatherium Namibiodon Remiculus? Sahnitherium? Wyonycteris? †Asioryctitheria Asioryctes Bulaklestes Daulestes Kennalestes Sasayamamylos Uchkudukodon Ukhaatherium †Cimolestidae Aboletylestes Acmeodon Alveugena Ambilestes Avunculus Bagalestes Batodon? Betonnia Chacopterygus Cimolestes Didelphodus Gelastops Ilerdoryctes Maelestes? Naranius Paleotomus Pararyctes Procerberus Protentomodon Puercolestes Scollardius Tsaganius †Didymoconidae Archaeoryctes Ardynictis Didymoconus Hunanictis Kennatherium Zeuctherium †Horolodectidae Ferrequitherium Horolodectes †Leptictida Gypsonictopidae Gypsonictops Sikuomys Pseudorhyncocyonidae Diaphyodectes Leptictidium Phakodon Pseudorhyncocyon Leptictidae Amphigyion Blacktops Gallolestes Ictopidium Labes Lainodon Leptictis Leptonysson Megaleptictis Myrmecoboides Ongghonia Palaeictops Praolestes Prodiacodon Protictops Wania †Palaeoryctidae Aaptoryctes Aceroryctes Eoryctes Lainoryctes Nuryctes Ottoryctes Palaeoryctes Pinoryctes †Pantolesta Paroxyclaenidae Dulcidon Euhookeria Fratrodon Kiinkerishella Kopidodon Merialus Paraspaniella Paroxyclaenus Pugiodens Sororodon Spaniella Vulpavoides Pantolestidae Amaramnis Aphronorus Bessoecetor Bisonalveus Bogdia Bouffinomus Buxolestes Chadronia Coriphagus Cryptopithecus Dyspterna Galethylax Gobipithecus Kochictis Oboia Pagonomus Palaeosinopa Pantolestes Pentacodon Thelysia Todralestes †Taeniodonta Schowalteria Conoryctidae Conoryctella Conoryctes Huerfanodon Onychodectidae Onychodectes Stylinodontidae Ectoganus Psittacotherium Stylinodon Wortmania †Tillodontia Adapidium Azygonyx Basalina Benaius Chungchienia Dysnoetodon Esthonyx Franchaius Higotherium Interogale Kuanchuanius Lofochaius Megalesthonyx Meiostylodon Plesiesthonyx Plethorodon Simplodon Tillodon Trogosus Yuesthonyx †Zalambdalestidae Alymlestes Anchilestes Barunlestes Beleutinus Kulbeckia Prozalambdalestes Zalambdalestes Zhangolestes Zofialestes †Zhelestidae Alostera? Aspanlestes Avitotherium Azilestes? Borisodon Eoungulatum Eozhelestes Gallolestes Kharmerungulatum Khuduklestes? Lainodon Mistralestes? Oxlestes? Paranyctoides? Parazhelestes Sheikhdzheilia Sorlestes Valentinella? Zhalmousia Zhelestes †Pantodonta see Pantodonta Placentalia Afrotheria Boreoeutheria Xenarthra

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• Cretaceous mammals
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