Notice of new reptiles from the Laramie Formation

AMONG the extensive collections of vertebrate fossils secnred during the last few years from the Oeratops beds along the eastern base of the Rocky MOllntains, remains of reptiles largely predominat.e, and many have already been described oy the writer. A number of new forms of much interest have recently been secured, and some of these are briefly noticed below. The presence of Ophidians and true Lacertilians among the gigantic forms of Din08U7{l'ia is especially noteworthy, as their discovery has long been expected. The new Dinosaur" described confirm previous indications, that this Stl bclass, before its extinction, developed into many highly specialized forms, of which suggestions, at least, were seen in those from lower horizons. The lal'ge number and variety of these specialized forms could hardly have been anticipated, and they make prominent the probability that the Reptilian age reached its cnlmination near the close of the Oretaceous.