"What do you mean it's your spot?" It ain't your spot!
Showing posts with label penguins. Show all posts
Showing posts with label penguins. Show all posts
Penguins Moved to Africa Many Times But Died Out
Penguins are funny little creatures though they are interesting to study. They first made landfall in Africa millions of year ago but they went extinct. They had a second go at colonization. This failed as well.
They preferred Antarctica, South America and Australia living there for a very long time. There are two ocean currents that could have brought penguins to Africa. Neither goes further north than the equator so colonization would have occurred only in south west Africa.
The third or perhaps fourth intrusion onto the African continent was successful. Blackfooted Penguins live their today. They are related to other banded penguins found in South America and the Pacific. There is evidence that four other types of penguins once existed in Africa. These were analysed to see if they were related. Two of the four were sufficiently complete for this. They were found not to be related to Blackfooted penguins or to each other, so colonization happened many times.
They preferred Antarctica, South America and Australia living there for a very long time. There are two ocean currents that could have brought penguins to Africa. Neither goes further north than the equator so colonization would have occurred only in south west Africa.
The third or perhaps fourth intrusion onto the African continent was successful. Blackfooted Penguins live their today. They are related to other banded penguins found in South America and the Pacific. There is evidence that four other types of penguins once existed in Africa. These were analysed to see if they were related. Two of the four were sufficiently complete for this. They were found not to be related to Blackfooted penguins or to each other, so colonization happened many times.
http://www.adventure--australia.blogspot.com/http://www.tysaustralia.blogspot.com/
http://www.feeds.feedburner.com/AdventureAustralia
http://www.technorati.com/blogs/
http://adventure--australia.blogspot.com
Science
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