Taeniodonta

Taeniodonta Temporal range: Late Cretaceous - Eocene,
Stylinodon mirus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Infraclass:	Placentalia (?)
Order:	†Taeniodonta
Families
Conoryctidae Stylinodontidae

Taeniodonta ("banded teeth") is an extinct early group of cimolestid mammals known from the Palaeocene to the Eocene. Taeniodonts evolved quickly into highly specialized digging animals, and varied greatly in size, from rat-sized to species as large as a bear. Later species developed prominent front teeth and huge claws for digging and rooting. Some genera, like Stylinodon, had ever-growing teeth.

Two families belong to this group, Stylinodontidae and Conoryctidae. They were endemic to North America. The scarcity of taeniodont fossils can be explained by the fact that these animals probably lived in dry or arid climates unconductive to fossilization. Taeniodonts are unambiguously Eutherians, and part of Cimolesta; Cimolestes is the immediate outgroup to Taeniodonta.

Taxonomy and Phylogeny

From Thomas E. Williamson and Stephen L. Brusatte (2013):

• Order Cimolesta

• Suborder Taeniodonta

• Alveugena
• Schowalteria
• Onychodectes
• Family Conoryctidae

• Conoryctella
• Huerfanodon
• Conoryctes

• Family Stylinodontidae

• Chungchienia
• Wortmania
• Psittacotherium
• Ectoganus
• Stylinodon

Taeniodonta	Alveugena Schowalteria Onychodectes Conoryctidae Conoryctella Huerfanodon Conoryctes Stylinodontidae Wortmania Psittacotherium Ectoganus Stylinodon

References

• Cox, Barry; Savage, R.J.G.; Gardiner, Brian; Dixon, Dougal (1988). "Early rooters and browsers". Macmillan Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. Macmillan London Limited. ISBN 978-0-333-48699-3. {{cite book}}: Invalid |ref=harv (help)
• McKenna, Malcolm C.; Bell, Susan K. (1997). Classification of Mammals Above the Species Level. New York: Columbia University Press. ISBN 978-0231110136. OCLC 37345734. {{cite book}}: Invalid |ref=harv (help)
• Rook, D.L.; Hunter, J.P. (2013). "Rooting Around the Eutherian Family Tree: the Origin and Relations of the Taeniodonta". Journal of Mammalian Evolution. 21: 1–17. doi:10.1007/s10914-013-9230-9.