Wordnet 3.0
NOUN (1)
1. 
 in former classifications a major division of Mammalia comprising all hoofed mammals; 
 now divided into the orders Perissodactyla (odd-toed ungulates) and Artiodactyla (even-toed ungulates); 
The Collaborative International Dictionary of English v.0.48:
Ungulata \Un`gu*la"ta\, n. pl. [NL., fr. L. ungula hoof.]
   (Zool.)
   An extensive group of mammals including all those that have
   hoofs. It comprises the Artiodactyla and Perissodactyla.
   [1913 Webster]
WordNet (r) 3.0 (2006):
Ungulata
    n 1: in former classifications a major division of Mammalia
         comprising all hoofed mammals; now divided into the orders
         Perissodactyla (odd-toed ungulates) and Artiodactyla (even-
         toed ungulates)