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The dugong (/ ˈ d (j) uː ɡ ɒ ŋ /; Dugong dugon) is a marine mammal.It is one of four living species of the order Sirenia, which also includes three species of manatees.It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century.
Metaxytherium is an extinct genus of dugong that lived from the Oligocene until the end of the Pliocene. Fossil remains have been found in Africa, Europe, North America and South America. Generally marine seagrass specialists, they inhabited the warm and shallow waters of the Paratethys, Mediterranean, Caribbean Sea and Pacific coastline.
A dugong's brain weighs a maximum of 300 grams (11 ounces), about 0.1% of the animal's body weight. [33] The bodies of sirenians are sparsely covered in short hair ( vibrissae ), except that it becomes denser on the muzzle, which may allow for tactile interpretation of their environment. [ 45 ]
A fossil reveals how a now-extinct species of dugong was swimming in the sea about 15 million years ago when it was preyed upon by a crocodile and a tiger shark.
Ecology and Conservation of the Sirenia: Dugongs and Manatees. Conservation Biology. Vol. 18. Cambridge: Cambridge University Press. pp. 35– 77. ISBN 978-0-521-71643-7. Appendices; Velez-Juarbe J, Domning DP, Pyenson ND (2012). "Iterative Evolution of Sympatric Seacow (Dugongidae, Sirenia) Assemblages during the Past ~26 Million Years". PLOS ONE.
Prehistoric Predators is a 2007 National Geographic Channel program based on different predators that lived in the Cenozoic era, including Smilodon and C. megalodon.The series investigated how such beasts hunted and fought other creatures, and what drove them to extinction.
The predator, which was larger than a person, likely used its wide, flat head and front teeth to suck in and chomp unsuspecting prey, researchers said. Its skull was about 2 feet (60 centimeters ...
Screengrab of Facebook video shared by Thailand's Department of National Parks, Wildlife and Plant Conservation Under the cover of darkness, a trio of predators walked through a forest in Thailand.