Vallecillosaurus

{{Short description|Extinct genus of lizards}}

{{Automatic Taxobox

| name = Vallecillosaurus

| fossil_range = {{fossilrange|94|89}} Late Cretaceous

| image = Vallecillosaurus donrobertoi.jpg

| image_caption =

| taxon = Vallecillosaurus

| authority = Smith & Buchy, 2008

| subdivision_ranks = Species

| subdivision = Vallecillosaurus donrobertoi Smith & Buchy, 2008

| synonyms =

}}

Vallecillosaurus is an extinct genus of mosasauroid from the Late Cretaceous period, that lived in Mexico, in the state of Nuevo León.{{Cite journal | doi=10.1671/0272-4634(2008)28[85:ANASAW]2.0.CO;2|year = 2008|volume = 28|pages = 85–94| title=A new aigialosaur (Squamata: Anguimorpha) with soft tissue remains from the Upper Cretaceous of Nuevo León, Mexico| journal=Journal of Vertebrate Paleontology| last1=Smith| first1=Krister T.| last2=Buchy| first2=Marie-Céline}} It was a relatively small reptile measuring less than {{cvt|1|m|ft}} long.{{cite journal|last1=Bardet|first1=Nathalie|title=The Cenomanian-Turonian (late Cretaceous) radiation of marine squamates (Reptilia): the role of the Mediterranean Tethys|journal=Bulletin de la Société Géologique de France|date=2008|volume=179|issue=6|pages=605–623|doi=10.2113/gssgfbull.179.6.605}}