Pachyrostra

• Achelousaurus horneri

  Dinosaur Achelousaurus horneri: scientific and paleontological classification, description, dimensions, length, weight, temporal range, species, fossils, references

• Pachyrhinosaurus canadensis

  Dinosaur Pachyrhinosaurus canadensis: scientific and paleontological classification, description, dimensions, length, weight, temporal range, species, fossils, references

• Pachyrhinosaurus lakustai

  Dinosaur Pachyrhinosaurus lakustai: scientific and paleontological classification, description, dimensions, length, weight, temporal range, species, fossils, references

• Pachyrhinosaurus perotorum

  Dinosaur Pachyrhinosaurus perotorum: scientific and paleontological classification, description, dimensions, length, weight, temporal range, species, fossils, references