398 



Pro/. 0. C. Marsh— Classification of Dinosaurs. 



' = ^*=«= 



Fig. 9.— Laosaupus coxsobs, Marsh. 



Jurassic, "Wyoming. 



coelian ; sacral vertebrae coossified. Sternum ossified. Postpubis 

 extending to end of ischium. Limb bones hollow ; five digits in 

 manus ; femur shorter than tibia ; hind feet with four digits. 

 Genus Eypsilophodon. Wealden, England. (Figure 10.) 



Fig. 10.— Hypsilophodon Foxii, Huxley. te-. Cretaceous, England. 



(8) Family Iguanodontidce. Piemaxillaries edentulous ; teeth in 

 single row. Anterior' vertebrae opisthocoelian. Manus with five 



