Atokasaurus

{{Short description|Extinct genus of lizards}}

{{Automatic taxobox

| fossil_range = Early Cretaceous

| display_parents = 2

| taxon = Atokasaurus

| authority = Nydam and Cifelli, 2002

| type_species = {{extinct}}Atokasaurus metarsiodon

| type_species_authority = Nydam and Cifelli, 2002

}}

Atokasaurus is an extinct genus of scincomorph lizard from the Early Cretaceous of Oklahoma. The type and only species is Atokasaurus metarsiodon, named in 2002 on the basis of a single isolated lower jaw bone found within the Antlers Formation in Atoka County. It is similar in appearance to extinct lizards in the family Paramacellodidae and may itself be a paramacellodid, although the phylogenetic relationships of the group are uncertain. Atokasaurus differs from other paramacellodids in having teeth in the lower jaw with enlarged bases and an S-shaped profile when viewed edge-on.{{cite journal |last1=Nydam |first1=R. |last2=Cifelli |first2=R. |year=2002 |title=Lizards from the Lower Cretaceous (Aptian-Albian) Antlers and Cloverly Formations |journal=Journal of Vertebrate Paleontology |volume=22 |issue=2 |pages=286–298 |url=https://www.researchgate.net/publication/236260935 |doi=10.1671/0272-4634(2002)022[0286:lftlca]2.0.co;2}}