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HandWiki. Nanotyrannus. Encyclopedia. Available online: https://encyclopedia.pub/entry/33276 (accessed on 22 September 2026).
HandWiki. Nanotyrannus. Encyclopedia. Available at: https://encyclopedia.pub/entry/33276. Accessed September 22, 2026.
HandWiki. "Nanotyrannus" Encyclopedia, https://encyclopedia.pub/entry/33276 (accessed September 22, 2026).
HandWiki. (2022, November 07). Nanotyrannus. In Encyclopedia. https://encyclopedia.pub/entry/33276
HandWiki. "Nanotyrannus." Encyclopedia. Web. 07 November, 2022.
Nanotyrannus
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Nanotyrannus ("dwarf tyrant") is a likely invalid genus of tyrannosaurid dinosaur. It is known from only a single certain specimen, CMNH 7541, that was originally proposed to be a distinct genus based on a handful of cranial and postcranial features. It has since been suggested to be juvenile of the contemporary species Tyrannosaurus rex, based on a lack of mature specimens and the proposed diagnostic traits being variable within the species, a conclusion that is not universally accepted.

nanotyrannus tyrannosaurus dinosaur

References

  1. Gilmore, C.W. (1946). "A new carnivorous dinosaur from the Lance Formation of Montana". Smithsonian Miscellaneous Collections 106: 1–19. 
  2. Bakker, R.T.; Williams, M.; Currie, P.J. (1988). "Nanotyrannus, a new genus of pygmy tyrannosaur, from the latest Cretaceous of Montana". Hunteria 1: 1–30. 
  3. Carr, T.D. (1999). "Craniofacial ontogeny in Tyrannosauridae (Dinosauria, Coelurosauria)". Journal of Vertebrate Paleontology 19 (3): 497–520. doi:10.1080/02724634.1999.10011161.  https://dx.doi.org/10.1080%2F02724634.1999.10011161
  4. Tsuihiji, T.; Watabe, M.; Tsogtbaatar, K.; Tsubamoto, T.; Barsbold, R.; Suzuki, S.; Lee, A.H.; Ridgely, R.C. et al. (2011). "Cranial osteology of a juvenile specimen of Tarbosaurus bataar from the Nemegt Formation (Upper Cretaceous) of Bugin Tsav, Mongolia". Journal of Vertebrate Paleontology 31 (3): 497–517. doi:10.1080/02724634.2011.557116.  https://dx.doi.org/10.1080%2F02724634.2011.557116
  5. Currie, P.J. (2003a). "Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada". Acta Palaeontologica Polonica 48: 191–226. 
  6. Currie, Henderson, Horner and Williams (2005). "On tyrannosaur teeth, tooth positions and the taxonomic status of Nanotyrannus lancensis." In "The origin, systematics, and paleobiology of Tyrannosauridae", a symposium hosted jointly by Burpee Museum of Natural History and Northern Illinois University.
  7. Henderson (2005). "Nano No More: The death of the pygmy tyrant." In "The origin, systematics, and paleobiology of Tyrannosauridae", a symposium hosted jointly by Burpee Museum of Natural History and Northern Illinois University.
  8. Larson (2005). "A case for Nanotyrannus." In "The origin, systematics, and paleobiology of Tyrannosauridae", a symposium hosted jointly by Burpee Museum of Natural History and Northern Illinois University.
  9. Larson P (2013), "The validity of Nanotyrannus Lancensis (Theropoda, Lancian - Upper Maastrichtian of North America", Society of Vertebrate Paleontology: 73rd annual meeting, Abstracts with Programs, p. 159.
  10. "Dino Death Match" (2015) Part of Jurassic Week. National Geographic Channel (UK). 13/06/2015
  11. Switek B, "Montana’s "Dueling Dinosaurs", blogs.smithsonianmag.com, 10-11-2011. http://blogs.smithsonianmag.com/dinosaur/2011/11/montanas-dueling-dinosaurs-2/
  12. https://cosmosmagazine.com/palaeontology/the-breaking-of-america-s-fossil-monument
  13. https://www.the-scientist.com/news-opinion/who-owns-the-dueling-dinos--montana-supreme-court-to-decide-66141
  14. Larson P (2013), "The validity of Nanotyrannus Lancensis (Theropoda, Lancian - Upper Maastrichtian of North America", Society of Vertebrate Paleontology: 73rd annual meeting, Abstracts with Programs, p. 159.
  15. Yun, C (2015). "Evidence points out that "Nanotyrannus" is a juvenile Tyrannosaurus rex".". PeerJ PrePrints 3: e1052. doi:10.7287/peerj.preprints.852v1.  https://dx.doi.org/10.7287%2Fpeerj.preprints.852v1
  16. Persons, W. S.; Currie, P. J. (2016). "An approach to scoring cursorial limb proportions in carnivorous dinosaurs and an attempt to account for allometry". Scientific Reports 6: 19828. doi:10.1038/srep19828. PMID 26813782. Bibcode: 2016NatSR...619828P.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4728391
  17. "Hind limb proportions do not support the validity of Nanotyrannus". http://mambobob-raptorsnest.blogspot.com/2016/03/hind-limb-proportions-cast-doubt-on.html. 
  18. Woodward, Holly N.; Tremaine, Katie; Williams, Scott A.; Zanno, Lindsay E.; Horner, John R.; Myhrvold, Nathan (2020). "Growing up Tyrannosaurus rex: Osteohistology refutes the pygmy "Nanotyrannus" and supports ontogenetic niche partitioning in juvenile Tyrannosaurus". Science Advances 6 (1). doi:10.1126/sciadv.aax6250. ISSN 2375-2548. https://advances.sciencemag.org/content/6/1/eaax6250. 
  19. Yun, C (2015). "Evidence points out that "Nanotyrannus" is a juvenile Tyrannosaurus rex".". PeerJ PrePrints 3: e1052. doi:10.7287/peerj.preprints.852v1.  https://dx.doi.org/10.7287%2Fpeerj.preprints.852v1
  20. D. Carr, Thomas (2013-09-15). ""NANOTYRANNUS ISN'T REAL, REALLY".". http://tyrannosauroideacentral.blogspot.com/2013/09/nanotyrannus-isnt-real-really.html?showComment=1447368882738#c6395910030969665299. 
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