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Thursday, January 30, 2014

John Updike

John Updike Evolution of Sirenia Many scientists believe that sirenians evolved sozzled to fifty-five million years ago from sm entirely foot animals. The closests living relatives today are elephants and small Asian mammals called hyraxes. Although in that location are vast differences between elephants, hyraxes, and sirenians, fossil demo shows that all three evolved from a common ancestor. The manatees corporal characteristics are visible remnants of their ancient heritage. The dugongs tusks are another link to elephants. Like elephants, sirenians are immense animals. thither are five species of Sirenia, but scientists theorize that there were numerous more in the past. Early forms of manatees are conceit to cast originated near the Amazon basin in due south America. about remained there to become the Amazonian manatee, while others migrated up done the Caribbean, magnanimous rise to the Antillean and Florida manatees. Another group ma naged to swim or where carried on currents acro...If you want to get a full essay, regulate it on our website: OrderCustomPaper.com

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