J. S. McIntosh and M. E. Williams. 1988. A new species of sauropod dinosaur, Haplocanthosaurus delfsi sp. nov., from the Upper Jurassic Morrison Fm. of Colorado. Kirtlandia 43:3-26
Bibliographie (1)
J. S. McIntosh and M. E. Williams. 1988. A new species of sauropod dinosaur, Haplocanthosaurus delfsi sp. nov., from the Upper Jurassic Morrison Fm. of Colorado. Kirtlandia 43:3-26