How To Use Sirenian In A Sentence
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The oldest is the Gehannam Formation (ca 40-41 million years old) consisting of white marly limestone and gypseous shale and yielding many skeletons of archaic whales (archaeocetes), sirenians (sea cows), shark teeth, turtles, and crocodilians.
Wadi Al-Hitan (Whale Valley), Egypt
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The hyrax - elephant - sirenian core is well-accepted on morphological grounds.
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To understand isotopic variation in Florida sirenians, we selected four teeth for serial sampling.
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Sirenians are members of the group known as subungulates, thought to be distantly related to hyraxes, elephants, and perhaps, artiodactyls and perissodactyls.
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Nineteen other species of invertebrates are known: three species of early sirenian (sea cow), one partial skeleton of the primitive proboscidian Moeritherium, early mammals, sharks, crocodiles, three kinds of sawfish, rays, cartilaginous and bony fishes, several kinds of turtles, including a sea turtle and a sea snake.
Wadi Al-Hitan (Whale Valley), Egypt
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Modern sirenians are large, docile, aquatic herbivores.
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Sirenians belong to a group called subungulates, which includes elephants and hyraxes, two animals that by appearances and habitat would seem to have nothing in common.
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Nineteen other species of invertebrates are known: three species of early sirenian (sea cow), one partial skeleton of the primitive proboscidian Moeritherium, early mammals, sharks, crocodiles, three kinds of sawfish, rays, cartilaginous and bony fishes, several kinds of turtles, including a sea turtle and a sea snake.
Wadi Al-Hitan (Whale Valley), Egypt
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The hyrax - elephant - sirenian core is well-accepted on morphological grounds.
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Corystosiren is a late-surviving dugong at a time when sirenian fossils are exceedingly rare in Florida.
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Granted, there are sirenian workers who have, indeed, suggested that Atlantic rifting might explain manatee distribution … but, those workers were publishing their papers in the early years of the 20th century (Arldt 1907)!
Archive 2006-01-01
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They are classified as ‘subungulates’ and believed to be related to hyraxes and sirenians.
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All living sirenians are found in warm tropical and subtropical waters.
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The remaining sirenians, are seriously threatened by hunting, habitat degradation, and in the case of manatees, collisions with boats in the shallow coastal areas they prefer.
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This may have supported a strong, fleshy lip with which Thalassocnus grazed seagrass or kelp, much like manatees and their sirenian relatives.
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From the molecular viewpoint, however, the phylogenetic relationship among elephants, sirenians, and hyraxes remains confused.
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Modern sirenians (manatees and dugongs) are large, docile, aquatic herbivores that have flippers for forelimbs and no hind limbs.
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Sirenians are members of the group known as subungulates, thought to be distantly related to hyraxes, elephants, and perhaps, artiodactyls and perissodactyls.
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Sirenians are vegetarians, feeding on a variety of marine algae and higher plants.
