Pentaedrusaurus

{{Short description|Extinct genus of reptiles}}

{{Automatic taxobox

| taxon = Pentaedrusaurus

| fossil_range = Early Triassic

| image = Pentaedrusaurus IVPP.jpg

| image_caption = Skeletal cast mount, Paleozoological Museum of China

| authority = Li, 1989

| type_species = {{extinct}}Pentaedrusaurus ordosianus

| type_species_authority = Li, 1989

}}

Pentaedrusaurus (meaning "pentagonal [skull] lizard"{{cite journal|last=Li|first=J.|year=1989|title=A new genus of Procolophonidae from Lower Triassic of Shaanxi, China|journal=Vertebrata PalAsiatica|volume=27|issue=4|pages=248–267|url=http://www.ivpp.cas.cn/cbw/gjzdwxb/xbwzxz/200902/W020090813372786904359.pdf|language=zh-cn,en}}) is an extinct genus of procolophonid parareptile from the Early Triassic of China. It is one of the most basal members of the procolophonid subfamily Leptopleuroninae. The only known species of Pentaedrusaurus, P. ordosianus, was named in 1989 from the Heshanggou Formation.{{Cite journal | last1 = Cisneros | first1 = J. C. | title = Phylogenetic relationships of procolophonid parareptiles with remarks on their geological record | doi = 10.1017/S1477201907002350 | journal = Journal of Systematic Palaeontology | volume = 6 | issue = 3 | pages = 345–366 | year = 2008 | bibcode = 2008JSPal...6..345C | s2cid = 84468714 }}