It is convenient to recognize two main divisions of the phylactolæmata, but these divisions hardly merit the distinction of being regarded as suborders. [Please select]
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Scientists recognize two suborders of living cetaceans: the whalebone whales, suborder Mysticeti, and the toothed whales, suborder Odontoceti. [Please select]
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CLASSIFICATION OF CETACEANS In addition to the two suborders (Mysticeti and Odontoceti), the cetacean order contains numerous families, genera, and species. [Please select]
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Some of these orders are divided into two or more suborders, where, while clearly belonging to the order, there is yet a sufficient difference in certain groups of families to justify this further separation. [Please select]
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