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Nov 1, 2016 · The Dugong is the only Sirenian found in the warm coastal waters of less than 40 countries from the western Pacific coasts to the eastern African coasts. Their historic range, which is along 86,992 miles of coastline between 26° and 27° degrees to the north and south of the equator, corresponds to the seagrasses from the Potamogetonaceae and Hydrocharitaceae families.
First, so far as we can tell, manatees and dugongs lie at the end of the group’s evolutionary journey. They had completed the transition from land to sea already by the end of the Eocene, subsequent to which the pace of anatomical change was slow and the degree of change relatively minor (some modification of dentition and digestion, for example).
Jul 21, 2018 · The mammary glands of females in the Sirenia genus are located on their upper bodies near their armpits, which are likely to have contributed to the reported ‘mermaid’ sightings of explorers and sailors. While manatees can be found in estuarine and fresh waters, dugongs are strictly marine mammals. They also possess a dolphin fluke-like tail.
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.
Jul 7, 2017 · There are three extant sirenian species of the Trichechidae family and one living Dugongidae family member. Given their close ties to coastal and often urbanized habitats, sirenians are exposed to many types of anthropogenic activities that result in challenges to their well-being, poor health, and even death.
- Robert K. Bonde, Mark Flint
- 2017
- 10.1007/978-3-319-46994-2_17
Dugongs and freshwater manatees differ mainly in their snouts and tails: dugongs have a down-turned snout and forked tail, while manatees have a straight snout and rounded tail. Both have thick, tough skin, eyes without eyelids, small external ear openings and the trademark strong muscular upper lip.
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Nov 11, 2024 · The fossils were identified as a dugongine sirenian, i.e. related to dugongs and manatees. The 2023 study found that the fossil, belonging to the Culebratherium genus, presented predation marks from not one, but two different predators: a tiger shark ( Galeocerdo aduncus ) and a crocodile.
