Eutyrannosauria is a clade of

tyrannosauroid Tyrannosauroidea (meaning 'tyrant lizard forms') is a superfamily (or clade) of coelurosaurian theropod dinosaurs that includes the family Tyrannosauridae as well as more basal relatives. Tyrannosauroids lived on the Laurasian supercontinent ...

theropod Theropoda (; ), whose members are known as theropods, is a dinosaur clade that is characterized by hollow bones and three toes and claws on each limb. Theropods are generally classed as a group of saurischian dinosaurs. They were ancestrally ...

s whose distribution has been found in what is now

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an ...

and North America. The clade consists of an evolutionary grade of tyrannosaurs such as '' Appalachiosaurus'', '' Dryptosaurus'', and ''

Bistahieversor ''Bistahieversor'' (meaning "Bistahi destroyer"), also known as the "Bisti Beast", is a genus of eutyrannosaurian tyrannosauroid dinosaur; the genus contains only a single known species, ''B. sealeyi'', described in 2010, from the Late Cretaceo ...

'' which led up to the family

Tyrannosauridae Tyrannosauridae (or tyrannosaurids, meaning "tyrant lizards") is a family of coelurosaurian theropod dinosaurs that comprises two subfamilies containing up to thirteen genera, including the eponymous ''Tyrannosaurus''. The exact number of genera ...

. The group was named in 2018 by Delcourt and Grillo in their paper about possible southern hemisphere tyrannosauroids and the phylogeography of tyrannosaurs.

Classification

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

References

Tyrannosaurs {{Theropod-stub