Pentaedrusaurus

Pentaedrusaurus (meaning "pentagonal [skull] lizard"^[1]) 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.^[2]

Pentaedrusaurus Temporal range: Early Triassic
Skeletal cast mount, Paleozoological Museum of China
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	†Parareptilia
Order:	†Procolophonomorpha
Family:	†Procolophonidae
Subfamily:	†Leptopleuroninae
Genus:	†Pentaedrusaurus Li, 1989
Type species
†Pentaedrusaurus ordosianus Li, 1989