On the genus Laelaps Author Cope, E. D. text The American Journal of Science, series 2 1868 1868-11-30 46 138 415 417 journal article http://doi.org/10.5281/zenodo.3458149 13c8f8f0-3ea5-4a40-afb1-5292f8380faa 3458149 Leaelaps macropus Cope , sp. nov . —This species differs from the former in the relative proportions of the phalanges and tibia; the toes were relatively larger than in the preceding. Some of these bones are figured by Leidy ( Cretaceous Reptiles ), and described under the head of animals related to Hadrosaurus. It will be described more fully by me in my forthcoming memoir on the extinct reptiles of North America.