Tyrannosaurus and other Cretaceous carnivorous dinosaurs Author Osborn, H. F. text Bulletin of the American Museum of Natural History 1905 21 259 265 journal article 10.5281/zenodo.1038222 03a0789d-7fee-4fbf-8948-c3212116c981 1038222 i. From the Cretaceous of New Jersey. Genus Dryptosaurus Marsh. Including the Laelaps of Cope . Probably a different animal, but not as yet distinguished from the previously described Deinodon . Type . — The type of this genus is also the type specimen of Laelaps aquilunguis Cope , consisting of portions of the jaws , teeth, and skeleton from the Cretaceous of New Jersey in the collection of the Academy of Natural Sciences at Philadelphia . Dental characters. — Mandibular teeth compressed, recurved, crowns lenticular in section, serrate on both edges, fangs transversely oval.