Spalacotheriidae

Spalacotheriidae Temporal range: Early Cretaceous - Late Cretaceous, 145–70 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Restoration of Yaverlestes
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Symmetrodonta
Superfamily:	†Spalacotherioidea
Family:	†Spalacotheriidae Marsh, 1887
Genera
See text

Spalacotheriidae is a family of extinct mammals belonging to the paraphyletic group 'Symmetrodonta'. They lasted from the Early Cretaceous to the Campanian in North America, Europe, Asia and North Africa.

Spalacotheriids are characterised by having molar teeth with three molar cusps sitting at acute angles to one another.^[1] The shape of their teeth as well as their long lower jaw indicate a carnivorous/insectivorous diet.^[2]

A sub-group of Spalacotheriidae, the spalacolestines, lack a Meckelian groove in the jaw, indicating that they had a modern ear anatomy.^[1]

Genera

• Akidolestes
• Infernolestes
• Spalacotherium
• Symmetrolestes
• Spalacolestinae^[2]
  • Aliaga
  • Heishanlestes
  • Lactodens
  • Shalbaatar
  • Spalacolestes
  • Spalacotheridium
  • Spalacotheroides
  • Symmetrodontoides
  • Yaverlestes

References

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Mammalia

Kingdom: Animalia Phylum: Chordata Clade: Synapsida Clade: Therapsida Clade: Cynodontia Clade: Mammaliaformes
Synapsida see Synapsida Cynodontia see Cynodontia Mammalia see below↓

Mammalia
Australosphenida? †Ambondro †Tendagurutherium? Monotremata? †Henosferidae Asfaltomylos Henosferus †Ausktribosphenidae Ausktribosphenos Bishops? Kryoparvus? Monotremata †Patagorhynchus †Steropodon †Kollikodontidae? Kollikodon Kryoryctes? Sundrius †Teinolophidae Stirtodon? Teinolophos Ornithorhynchidae †Monotrematum? †Obdurodon Ornithorhynchus Tachyglossidae †Megalibgwilia †Murrayglossus Tachyglossus Zaglossus †Allotheria? see Allotheria includes multituberculates Theriimorpha see below↓

Theriimorpha
Theriimorpha †Acinacodus †Amphidon †Amphilestes †Aploconodon †Chaoyangodens †Comodon †Condorodon †Dyskritodon? †Fruitafossor? †Hakusanodon †Indotriconodon †Juchilestes †Jueconodon †Kemchugia †Kryptotherium †Liaoconodon †Liaotherium †Manchurodon †Nakunodon †Phascolotherium †Sangarotherium †Tendagurodon †Allotheria? Monotremata? †Gobiconodontidae Fuxinoconodon Gobiconodon Hangjinia Huasteconodon? Meemannodon Repenomamus Spinolestes †Jeholodentidae Jeholodens Yanoconodon †Klameliidae? Ferganodon Klamelia †Triconodontidae Alticonodon Arundelconodon Astroconodon Corviconodon Eotriconodon Jugulator Meiconodon Priacodon Triconodon Trioracodon Victoriaconodon Volaticotheria? †Volaticotheria Argentoconodon Ichthyoconodon Triconolestes? Volaticotherium †Tinodontidae Gobiotheriodon? Tinodon Trishulotherium Yermakia Trechnotheria Monotremata? †Zhangheotheriidae Anebodon Kiyatherium Maotherium Origolestes Zhangheotherium †Spalacotheriidae Akidolestes Aliaga Cifellitherium Heishanlestes Infernolestes Lactodens Shalbaatar Spalacolestes Spalacotheridium Spalacotherium Spalacotheroides Symmetrodontoides Symmetrolestes Yaverlestes Cladotheria see below↓

Cladotheria
†Dryolestida Brancatherulum? Dorsetodon Drescheratherium Euthlastus Henkelotherium Paurodon Tathiodon Dryolestidae Achyrodon Amblotherium Anthracolestes Beckumia Crusafontia Dryolestes Groebertherium? Guimarotodus Hercynodon Krebsotherium Lakotalestes? Laolestes Minutolestes Phascolestes Portopinheirodon Treslagosodon †Meridiolestida Amarillodon Austrotriconodon Bondesius Casamiquelia Lakotalestes? Paraungulatum Quirogatherium Cronopioidea Cronopio Leonardus Necrolestes Mesungulatoidea Coloniatherium Mesungulatum Orretherium Peligrotherium Reigitherium †Donodontidae Amazighodon Anoualestes Donodon Stylodens Prototribosphenida †Abelodon †Arguimus †Brancatherulum? †Chunnelodon †Magnimus †Minimus †Mozomus †Nanolestes †Vincelestes †Amphitheriidae Amphibetulimus Amphitherium Palaeoxonodon Zatheria †Vincelestes? Monotremata? †Peramuridae Afriquiamus? Kouriogenys Peramuroides Peramus Tendagurutherium? Tribosphenida / Boreosphenida †Aegialodon †Argaliatherium †Brasilestes †Carinalestes †Eomaia †Holoclemensia †Hypomylos †Juramaia †Kermackia †Kielantherium †Pappotherium †Picopsis †Tirotherium †Tribactonodon Theria †Patagomaia Eutheria see Eutheria includes placentals Metatheria see Metatheria includes marsupials

Other taxa
Incertae sedis †Atlasodon †Chronoperates †Microderson †Thereuodon Saint Bathans Mammal UA 8699 Other groups Prototheria Yinotheria Eutriconodonta Amphilestidae Theriiformes Pantotheria Symmetrodonta Paurodontidae

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