Multiple choice Which of the following pair of animals comes under the order Sirenia of class Mammalia? Halicore, Rhytina Oryctolagus, Lepus Trichechus, Lepus Halicore, Oryctolagus Lepus, Hydrodamalis Reveal answer Fill a bubble to check yourself A Correct answer Explanation Both Halicore and Rhytina belong to the order Sirenia of class Mammalia. The sirenians are herbivorous and aquatic mammals with paddle like forelimbs and no hindlimbs.