"Coelosaurus" antiquus ("antique hollow lizard") is a dubious species of theropod dinosaurs. It was named by Joseph Leidy in 1865 for two tibiae found...

Ornithomimus antiquus. Normally, this would have made Ornithomimus a junior synonym of Coelosaurus, but Baird and Horner discovered that the name "Coelosaurus" was...

†Clavipholas †Clavipholas pectorosa †Clavipholas pectrosa †Coelosaurus †Coelosaurus affinis †Coelosaurus antiquus †Coelurus †Coelurus gracilis – type locality for...

Clavagella †Clidastes – or unidentified comparable form Cliona †Coelosaurus †Coelosaurus antiquus Corbula †Crenella †Crenella serica †Cretolamna †Cretolamna...

back to the Late Cretaceous period. cf. Deinosuchus rugosus cf. Coelosaurus antiquus cf. Dryptosaurus sp. cf. Lophorhoton atopus Hypsibema crassicauda...

among the fossils that have been recovered from the formation. "Coelosaurus" antiquus Ornithomimidae indet. Hadrosauridae indet. Cimoliasaurus magnus...

Dinosaurs Genus Species Material Notes Images Coelosaurus C. antiquus Tibia An ornithomimid. Diplotomodon D. horrificus Tooth Indeterminate theropod....

†Ceratodus Cerithium Chiloscyllium †Cimoliasaurus †Coelosaurus †Coelosaurus affinis †Coelosaurus antiquus †Coelurus †Coelurus gracilis – type locality for...

†Cimolomys clarki †Cirroceras Clavagella †Clidastes Cliona †Coelosaurus †Coelosaurus antiquus – type locality for species †Coelurosaurichnus Corbula †Corsochelys...

†Clidastes – or unidentified comparable form Cliona †Clisocolus †Coelosaurus †Coelosaurus antiquus Corbula Crassatella †Crassatella newkirkensis †Crassatella...