Biology:Taeniodonta
| Taeniodonta | |
|---|---|
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| Stylinodon mirus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Placentalia |
| Order: | †Taeniodonta Cope, 1876 |
| Families | |
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[see classification]
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Taeniodonta ("banded teeth") is an extinct early group of eutherian mammals known from the Maastrichtian 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.[2]
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. Genera Ambilestes, Procerberus and Alveugena are the immediate outgroup to Taeniodonta.[3]
According to 2022 studies of Bertrand, O. C. and Sarah L. Shelley, taeniodonts are identified to be a basal placental mammal.[4][5]
Taxonomy and phylogeny
From Thomas E. Williamson and Stephen L. Brusatte (2013):[6]
- Order Taeniodonta
- Onychodectes
- Schowalteria
- Family Conoryctidae
- Conoryctella
- Conoryctes
- Huerfanodon
- Family Stylinodontidae
- Chungchienia
- Ectoganus
- Psittacotherium
- Stylinodon
- Wortmania
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Notes
- ↑ "Taeniodonta". https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=106379&is_real_user=1.
- ↑ Cox et al. 1988, p. 237
- ↑ Rook & Hunter 2013
- ↑ Bertrand, O. C.; Shelley, S. L.; Williamson, T. E.; Wible, J. R.; Chester, S. G. B.; Flynn, J. J.; Holbrook, L. T.; Lyson, T. R. et al. (2022). "Brawn before brains in placental mammals after the end-Cretaceous extinction". Science 376 (6588): 80–85. doi:10.1126/science.abl5584. Bibcode: 2022Sci...376...80B. https://www.research.ed.ac.uk/en/publications/d7fb8c6e-886e-4c1d-9977-0cd6406fda20.
- ↑ Sarah L. Shelley (2022.) "The phylogeny of Paleocene mammals and the evolution of Placentalia", in "The Society of Vertebrate Paleontology 82nd annual meeting"
- ↑ 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. doi:10.1371/journal.pone.0075886. PMID 24098738. Bibcode: 2013PLoSO...875886W.
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.
- McKenna, Malcolm C.; Bell, Susan K. (1997). Classification of Mammals Above the Species Level. New York: Columbia University Press. ISBN 978-0231110136. OCLC 37345734.
- 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.
Wikidata ☰ Q135280 entry
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