slender-proportioned crocodylomorph to Hallopus, may be synonymous with it. The holotype specimen of Hallopus was discovered by near Canyon City, Colorado...

the work of Marsh and Peter M. Galton, involving the genera Laosaurus, Hallopus, Drinker, Othnielia, and Othnielosaurus, the latter three now being considered...

Macelognathus Hallopus...

†Trialestes †Saltoposuchidae Litargosuchus Saltoposuchus Terrestrisuchus †Hallopodidae Almadasuchus Hallopus Macelognathus †Thalattosuchia see Thalattosuchia...

†Trialestes †Saltoposuchidae Litargosuchus Saltoposuchus Terrestrisuchus †Hallopodidae Almadasuchus Hallopus Macelognathus †Thalattosuchia see Thalattosuchia...

Naturalienkabinett. In a lecture on 9 October 1911, Fraas referred to it by the name "Hallopus celerrimus", considering it a jumping form of dinosaur that was approximately...

†Trialestes †Saltoposuchidae Litargosuchus Saltoposuchus Terrestrisuchus †Hallopodidae Almadasuchus Hallopus Macelognathus †Thalattosuchia see Thalattosuchia...

nudum; junior synonym of Gryposaurus Hadrosaurus Haestasaurus Hagryphus Hallopus – subsequently found to be a crocodylomorph Halszkaraptor Halticosaurus...

†Trialestes †Saltoposuchidae Litargosuchus Saltoposuchus Terrestrisuchus †Hallopodidae Almadasuchus Hallopus Macelognathus †Thalattosuchia see Thalattosuchia...

†Trialestes †Saltoposuchidae Litargosuchus Saltoposuchus Terrestrisuchus †Hallopodidae Almadasuchus Hallopus Macelognathus †Thalattosuchia see Thalattosuchia...