1.Ten million years ago, walruses were the most diverse seals of the Pacific Ocean; some ate fish, other mollusks and bottom invertebrates. Five million years ago, walruses of California ate clams and sucked their content, missing lateral teeth for this purpose; this is an extinct branch.Modern walruses evolved from ... |
5 December 2007
16:53 GMT |
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1.There are 170 known fossil elephant species that inhabited the whole Earth, except for Australia and Antarctica. The elephants' ancestors appeared 50 million years ago in North Africa, were pig sized and resembled a tapir. Elephants' living closest relatives are sea cows, like manatees, dugongs and hyraxe... |
21 November 2007
16:48 GMT |
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The elephants' fate is in our hands, because we're the ones who influence two main factors menacing their populations: habitat loss and the illegal ivory trade. At the beginning of the 20th century, there were 3-5 million elephants in Africa. Then, the hunt was practiced mainly by the Arab ivory smugglers a... |
5 October 2007
02:51 GMT |
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In modern day elephants, tusks rarely exceed 3.5 m (12 ft) in length in African male champions. In mammoths, this was the norm. But recently, in northern Greece, 250 mi (400 km) north of Athens, researchers have discovered two massive tusks of a prehistoric mastodon that roamed Europe over 2 million years ago and whi... |
27 July 2007
03:01 GMT |
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