Data and code from: A new Mongolian tyrannosauroid and the evolution of Eutyrannosauria

Eutyrannosauria were the large apex predators that dominated Asian and North American terrestrial faunas in the latest Cretaceous. These predators arose from smaller-bodied tyrannosauroid ancestors during the “middle” Cretaceous, which are poorly known due to the paucity of fossil material. Here we report on a new tyrannosauroid, Khankhuuluu mongoliensis gen. et sp. nov., from lower Upper Cretaceous deposits of Mongolia that provides a new perspective on eutyrannosaurian origins and evolution. A phylogenetic analysis recovers Khankhuuluu as the species closest to Eutyrannosauria and uniquely recovers the massive, deep-snouted Tyrannosaurini and the smaller, gracile, shallow-snouted Alioramini as highly derived sister clades. Khankhuuluu and Alioramini independently share features related to a shallow skull and gracile build with juvenile eutyrannosaurians, reinforcing the key role heterochrony played in eutyrannosaurian evolution. Within a Eutyrannosauria influenced by peramorphosi..., , , # Data and code from: A new tyrannosauroid from Mongolia and the origins and evolutionary history of Eutyrannosauria

[https://doi.org/10.5061/dryad.fj6q5744h](https://doi.org/10.5061/dryad.fj6q5744h)

**Voris_et_al-TyrannosauroideaCharacterMatrix.xslx**: Copy of the phylogenetic character datasheet in Microsoft Excel .xlsx format.

**Voris_et_al-TyrannosauroideaCharacterMatrix.csv**: Copy of the phylogenetic character datasheet in comma delimited .csv format. Contains the same data as Voris_et_al-TyrannosauroideaCharacterMatrix.xlsx.

**Voris_et_al-TyrannosauroideaCharacterMatrix.nex**: Copy of the phylogenetic character datasheet in Nexus .nex format. Contains the same data as Voris_et_al-TyrannosauroideaCharacterMatrix.xlsx.

**Voris_and Zelenitsky_et_al-Illustrated_Character_List.pdf (Zenodo)**: Character state illustrations.

**Voriset_al_SupportingCode_Scripts.zip (Zenodo)**: Scripts and additional data needed to replicate our results.

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