order of marine mammals containing whales, 1830, Modern Latin, from Latin cetus "any large sea creature" (whales, seals, dolphins), from Greek ketos "a whale, a sea monster," of unknown origin, + -acea. Hence cetology "the study of whales," first attested 1851 in "Moby Dick."
Examples from the Web for cetacea
Historical Examples of cetacea
Lamarck also separated the seals and morses from the cetacea.Lamarck, the Founder of Evolution
Alpheus Spring Packard
A check-list of the mammals of Texas exclusive of the Sirenia and Cetacea.American Weasels
E. Raymond Hall
The size of the Cetacea has been subjected to much exaggeration.The Cambridge Natural History, Vol X., Mammalia
Frank Evers Beddard
The tapetum lucidum is found in Ungulata, Cetacea and Carnivora.
I have placed Cetacea after Carnivora, and Edentata at the end.Natural History of the Mammalia of India and Ceylon
Robert A. Sterndale