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- Dugongs and other sirenians are not closely related to other marine mammals, being more related to elephants. Dugongs and elephants share a monophyletic group with hyraxes and the aardvark, one of the earliest offshoots of eutherians. The fossil record shows sirenians appearing in the Eocene, where they most likely lived in the Tethys Ocean.
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Dugongs and elephants share a monophyletic group with hyraxes and the aardvark, one of the earliest offshoots of eutherians. The fossil record shows sirenians appearing in the Eocene, where they most likely lived in the Tethys Ocean.
Dugongs and elephants share a monophyletic group with hyraxes and the aardvark, one of the earliest offshoots of eutherians. The fossil record shows sirenians appearing in the Eocene, where they most likely lived in the Tethys Ocean.
The eutherians now represented in Australia are very diverse. They fall into major suites of species: Muridae; Chiroptera; marine mammals (whales, seals and dugong); introduced carnivores (Canidae and Felidae); introduced Leporidae (hares and rabbits); and introduced ungulates (Perissodactyla and Artiodactyla).
Eutherians are distinguished from noneutherians by various phenotypic traits of the feet, ankles, jaws and teeth. All extant eutherians lack epipubic bones, which are present in all other living mammals (marsupials and monotremes).
- Dugongs Are Also Called Sea Cows. Dugongs have very muscular cleft upper lips that stick out over their mouths. These bristled and ultra-sensitive snouts are very strong and allow dugongs to root around the ocean floor and grab seagrass.
- They are Closely Related to Elephants. There were once other Dugongidae species like dugongs in the oceans, like the Steller’s sea cow (Hydrodamalis gigas).
- You Can Guess a Dugong’s Age by Looking at the Rings on Its Tusks. The tusks of a dugong are actually just two elongated front teeth. These stick out from their mouths and have sharp, angled edges.
- Dugongs Can Live for a Very Long Time. When dugong babies are born, they are only around 3 or 4 feet long and weigh 44 to 77 pounds. That may not seem all that small, but a fully grown dugong can grow up to 10 feet long and weigh over 1,000 pounds!
6 days ago · dugong, (Dugong dugon), marine mammal that inhabits the warm coastal waters of the Indian and Pacific Oceans, feeds on seagrasses, and is similar to the manatee.
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Sep 1, 2020 · Eutherian mammals originated in the Early Cretaceous but modern placental orders radiated in the Cenozoic, after extinction of dinosaurs. The four major groups of Placentalia are Xenarthra ...
