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Stylinodon Temporal range: 53.4–39.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N early to middle Eocene
life restoration of Stylinodon mirus
skull of Stylinodon mirus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Taeniodonta
Family:	†Stylinodontidae
Subfamily:	†Stylinodontinae
Tribe:	†Stylinodontini Marsh, 1875
Genus:	†Stylinodon Marsh, 1874
Type species
†Stylinodon mirus Marsh, 1874
Synonyms
synonyms of species: S. mirus: Calamodon cylindrifer (Cope, 1881) Stylinodon cylindrifer (Wortman, 1896) Stylinodon inexplicatus (Schoch & Lucas, 1981)

Stylinodon ("tooth with pilar-like fibers") is an extinct genus of taeniodonts from extinct tribe Stylinodontini within subfamily Stylinodontinae and family Stylinodontidae, that lived in North America from early to middle Eocene.

With a weight between 54.9 kg (121 lb) and 109 kg (240 lb), and length of 1.30 m (4 ft 3 in), it had similar size to a pig. The skull suggests it had a blunt face, and a very short snout. Its canines had developed into huge, incisor-like root-less teeth. Stylinodon's molars were covered in enamel and continued growing throughout its life. Most likely, it fed on rough roots and tubers.

Phylogeny

References

1. O. C. Marsh (1874.) "Notice of new Tertiary mammals. III." American Journal of Science, series 3 7(41):531-534
2. Marsh, O. C. (1875.) "New Order of Eocene Mammals." American Journal of Science 9:221
3. J. Alroy (2002.) "Synonymies and reidentifications of North American fossil mammals."
4. E. D. Cope (1881). ""On the Vertebrata of the Wind River Eocene beds of Wyoming."". Bulletin of the United States Geological and Geographical Survey. 6 (1): 183–202.
5. Wortman, J. L. (1896.) "The Ganodonta and their relationship to the Edentata." Bulletin of the AMNH; vol. 9, article 6
6. Schoch, R. M.; Lucas, S. G. (1981). ""The systematics of Stylinodon, a middle to late Eocene taeniodont (Mammalia) from western North America."". J. Vertebr. Paleontol. 1: 175–83. doi:10.1080/02724634.1981.10011890. JSTOR 4522849.
7. Palmer, Theodore Sherman (1904). Index Generum Mammalium: A List of the Genera and Families of Mammals. U.S. Government Printing Office.
8. ^ Schoch, Robert M. (1986.) "Systematics, functional morphology and macroevolution of the extinct mammalian order Taeniodonta." Bulletin of the Peabody Museum of Natural History, (42).
9. McKenna, Malcolm C.; Bell, Susan K. (1997). Classification of Mammals Above the Species Level. New York: Columbia University Press. ISBN 978-0-231-11012-9. Retrieved 16 March 2015.
10. S. G. Lucas, R. M. Schoch, and T. E. Williamson (1998.) "Taeniodonta". In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), "Evolution of Tertiary Mammals of North America, Volume 1: Terrestrial Carnivores, Ungulates, and Ungulate like Mammals", Cambridge University Press, 703 pages
11. Williamson, T. E.; Brusatte, S. L. (2013). Viriot, Laurent (ed.). "New Specimens of the Rare Taeniodont Wortmania (Mammalia: Eutheria) from the San Juan Basin of New Mexico and Comments on the Phylogeny and Functional Morphology of "Archaic" Mammals". PLOS ONE. 8 (9): e75886. Bibcode:2013PLoSO...875886W. doi:10.1371/journal.pone.0075886. PMC 3786969. PMID 24098738.
12. Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 237. ISBN 1-84028-152-9.

External links

• Photograph of skull at Utah Field House of Natural History Museum, at Vernal, Utah

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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