How To Use Order cetacea In A Sentence

• The order Sirenia is composed of manatees and dugongs, and the order Cetacea includes whales, dolphins, and porpoises.
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• If in a series of evolving generations the line of modification proceeding from a terrestrial animal like a cat to semi-aquatic and marine types substantially like an otter and a seal should be carried further, it will inevitably lead to forms possessing characters such as those displayed by whales and the related porpoises, dolphins, and narwhals of the order cetacea. The Doctrine of Evolution Its Basis and Its Scope
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• The order Cetacea comprises two extant sub-orders and one extinct sub-order.
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