Nanotyrannus

Nanotyrannus (meaning "dwarf tyrant") is a doubtful genus of tyrannosaurid dinosaur. They may be a juveniles of Tyrannosaurus or a similar genus. The issue is not yet decided.[1]

Nanotyrannus
Temporal range: , Late Cretaceous, 68.5–66 Ma
↓
Holotype skull
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Family: †Tyrannosauridae
Subfamily: †Tyrannosaurinae
Genus: †Nanotyrannus
Bakker, Currie & Williams, 1988
Species:
†N. lancensis
Binomial name
Nanotyrannus lancensis
Gilmore, 1946
Synonyms
Genus synonymy
  • Stygivenator?
    Olshevsky, 1995
Species synonymy
  • Gorgosaurus lancensis
    Gilmore, 1946
  • Deinodon lancensis
    (Gilmore, 1946)
  • Aublysodon lancensis
    (Gilmore, 1946)
  • Albertosaurus lancensis
    (Gilmore, 1946)
  • Tyrannosaurus lancensis?
    (Gilmore, 1946)
  • Stygivenator molnari?
    (Paul, 1988)

Only two or three specimens are known. They are from the end of the Upper Cretaceous, 67 million years ago.

References
  1. Tsuihiji, T.; Watabe, M.; Tsogtbaatar, K.; Tsubamoto, T.; Barsbold, R.; Suzuki, S.; Lee, A.H.; Ridgely, R.C.; Kawahara, Y.; Witmer, L.M. (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. S2CID 15369707.


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