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)