Lizards of the Families Dorsetisauridae and Xenosauridae (Anguimorpha) from the Aptian–Albian of Mongolia

Abstract

This paper describes two new species of lizards of the infraorder Anguimorpha from the Aptian-Albian of Mongolia. One of these, Paradorsetisaurus postumus gen. et sp. nov., is the youngest in the family Dorsetisauridae, while the other, Xenostius futilus gen. et sp. nov. is the earliest fossil find within the family Xenosauridae s. str. The paper also includes remarks on the importance of the fossil finds from Mongolia for the reconstruction of lizard diversity in Central Asia up to the beginning of the late Cretaceous.