Pinacosaurus

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Pinacosaurus
Temporal range: Late Cretaceous, 80–75 Ma
Pinacosaurus.jpg
Skeleton reconstruction of P. mephistocephalus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Ornithischia
Family: Ankylosauridae
Subfamily: Ankylosaurinae
Genus: Pinacosaurus
Gilmore, 1933
Species
  • P. grangeri Gilmore, 1933 (type)
  • P.? mephistocephalus Godefroit et al., 1999
Synonyms
  • Pinacosaurus ninghsiensis
    Young, 1935
  • Heishansaurus pachycephalus?
    Bohlin, 1953
  • Syrmosaurus viminocaudus
    Maleev, 1952

Pinacosaurus ("plank lizard") is a genus of medium-sized ankylosaur dinosaurs from the Upper Cretaceous of Mongolia and China. It lived about 80–75 million years ago. Pinacosaurus had between two and five additional holes near each nostril, which have not been explained.