Eutyrannosauria

Eutyrannosauria is a clade of tyrannosauroid theropods whose distribution has been found in what is now Asia and North America.[1] The clade consists of an evolutionary grade of tyrannosaurs such as Appalachiosaurus, Dryptosaurus, and Bistahieversor which led up to the family Tyrannosauridae.[2][3][1] The group was named in 2018 by Delcourt and Grillo in their paper about possible southern hemisphere tyrannosauroids and the phylogeography of tyrannosaurs.[1]

Eutyrannosaurians
Temporal range:
Late Cretaceous,
Dryptosaurus aquilunguis
Tyrannosaurus rex
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Superfamily: †Tyrannosauroidea
Clade: †Pantyrannosauria
Clade: †Eutyrannosauria
Delcourt & Grillo, 2018
Subgroups

Classification

Below is a phylogeographic cladogram of Eutyrannosauria after Voris et al. (2020):[4]

Eutyrannosauria
 
 

Dryptosaurus aquilunguis

 
 
 

Appalachiosaurus montgomeriensis

 
 
 

Bistahieversor sealeyi

 
 
Tyrannosauridae
Albertosaurinae
 

Gorgosaurus libratus

 
 

Albertosaurus sarcophagus

 
 
Tyrannosaurinae
Alioramini
 

Qianzhousaurus sinensis

 
 
 

Alioramus remotus

 
 

Alioramus altai

 
 
 
 
 
 

Teratophoneus curriei

 
 

Dynamoterror dynastes

 
 

Lythronax argestes

 
 
 
 

Nanuqsaurus hoglundi

 
 
 
Daspletosaurini
 

Thanatotheristes degrootorum

 
 
 

Daspletosaurus torosus

 
 

Daspletosaurus horneri

 
 
 
 
 

Zhuchengtyrannus magnus

 
 
 

Tarbosaurus bataar

 
 

Tyrannosaurus rex

 
 
 
 
 
 
 
 
 
 
 
 
 
 

References

  1. Delcourt, R.; Grillo, O. N. (2018). "Tyrannosauroids from the Southern Hemisphere: Implications for biogeography, evolution, and taxonomy". Palaeogeography, Palaeoclimatology, Palaeoecology. 511: 379–387. Bibcode:2018PPP...511..379D. doi:10.1016/j.palaeo.2018.09.003.
  2. Loewen, M.A.; Irmis, R.B.; Sertich, J.J.W.; Currie, P. J.; Sampson, S. D. (2013). Evans, David C (ed.). "Tyrant Dinosaur Evolution Tracks the Rise and Fall of Late Cretaceous Oceans". PLoS ONE. 8 (11): e79420. Bibcode:2013PLoSO...879420L. doi:10.1371/journal.pone.0079420. PMC 3819173. PMID 24223179.
  3. Stephen L. Brusatte, Alexander Averianov, Hans-Dieter Sues, Amy Muir and Ian B. Butler (2016). "New tyrannosaur from the mid-Cretaceous of Uzbekistan clarifies evolution of giant body sizes and advanced senses in tyrant dinosaurs". Proceedings of the National Academy of Sciences of the United States of America. 113 (13): 3447–3452. doi:10.1073/pnas.1600140113. PMC 4822578. PMID 26976562.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. Jared T. Voris; François Therrien; Darla K. Zelenitsky; Caleb M. Brown (2020). "A new tyrannosaurine (Theropoda:Tyrannosauridae) from the Campanian Foremost Formation of Alberta, Canada, provides insight into the evolution and biogeography of tyrannosaurids". Cretaceous Research. 110: Article 104388. doi:10.1016/j.cretres.2020.104388.


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