Prom Knipt'i "\ebula to A/on." 



TRICERATOPS: A HUGE EXTINCT REPTILE 

 (From remains found in Cretaceous strata of Wyoming, U.S.A.) 



Thu Dinosaur, about the size of a large rhinoceros, had a huge three-horned skull with a remarkable bony collar over the neck 

 But. a* in many other cases, its brain was so small that it could have passed down the spinal canal in which the spinal cord lies. Per- 

 haps this partly accounts for the extinction of giant reptiles. 



THK MM KMMI.K OK m< K-BILLED PLATYPUS OF AUSTRALIA 

 Tb DoctonoU or Duck-billed Platypus of Australia ii a survivor of the most primitive mammals. It harks back to reptiles, e 



rw. in baring comparatively Urge eggs, and in being imperfectly warm-blooded. It swims well and feeds on snug 

 wmUr-animali. It can also borrow. 



