FOUND LINKS. ^5 



tliat "chew the cud/' and comparative anatomists 

 will tell us that the pigs and hippopotamus group 

 themselves show, in many respects, an approximation 

 to the Ruminants*. Or to take yet another example 

 from Cuvierian times, we find in the Palcvotherium an 

 animal which links the Tapirs to the Horses, and 

 which shows a combination of characters that amply 

 satisfies the evolutionist of its " intermediate " nature. 

 But the more recent discoveries of Marsh throw the 

 foregoing cases into the shade in respect of the mass 

 of material which that indefatigable palaeontologist 

 has accumulated. Thus we have been forced to con- 

 stitute a whole series of new orders for the reception 

 of the forms Professor Marsh has unearthed. What, 

 for instance, shall we say of the extinct Dinoceras and 

 its neighbours ? These huge elephantine animals 

 united in themselves the characters of Elephants, and 

 of odd-toed " hoofed " quadrupeds. With limb-bones 

 like those of Elephants, Dinoceras possessed teeth that 

 exhibited a combination of the characters of carni- 

 vorous animals with those of " hoofed " forms. More 

 extraordinary still were the Tillodonts from the Eocene 

 rocks of the United States. Here are combined the 

 features of hoofed quadrupeds (Ungulata) , Carnivorous 

 animals, and Rodents. With a skull like that of a 

 Bear, Tillotherium possessed front teeth exactly resem- 

 bling those of the Rodents, or " Gnawers," and which 

 appear to have combined to grow throughout the life 

 of the animal, whilst the grin ding- teeth were those of 

 a hoofed animal. So, also, another group of extinct 



