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Palaeontology

Prehistoric oceans inhabited by giant fish

By T.K. Randall
February 22, 2010 · Comment icon 8 comments

Image Credit: Dmitry Bogdanov
Between 66 and 172 million years ago enormous plankton-eating fish prowled the depths of the world's oceans.
Fish such as Leedsichthys would have been numerous before the event that wiped out the dinosaurs, it is believed that these creatures may have bridged the evolutionary gap between fish and mammals.
Prehistoric seas were filled with giant plankton-eating fish which died out at the same time as the dinosaurs, new fossil evidence suggests. Scientists from Glasgow, Oxford and the United States have identified fossil evidence which shows the fish existed between 66 and 172 million years ago.


Source: BBC News | Comments (8)




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Recent comments on this story
Comment icon #1 Posted by keenu 15 years ago
Let's entertain the idea that if the earth was originally about 2 to 3 times bigger then it wouldn't be surprising that it was populated by giant fish and mammals. It would make sense. I believe something collided with the earth and knocked off a huge chunk and then it was smaller. So, all the huge mammals and fish became extinct and the earth repopulated with smaller mammals and fish and so forth. Anyone of the same thoughts?
Comment icon #2 Posted by ShadowSot 15 years ago
Another article with more of a personal view on the find, in regards to the family in Kansas. http://www.kansas.com/2010/02/18/1187588/ancient-giant-fish-uncovered-in.html
Comment icon #3 Posted by The Curious One 15 years ago
didn't see anywhere how big they are believed to have been?
Comment icon #4 Posted by DieChecker 15 years ago
Bridge the gap between Mammals and Fish??? Whaaa..... I thought the difference between fish and mammals was bridged by amphibians and reptiles???
Comment icon #5 Posted by prairiechickin 15 years ago
didn't see anywhere how big they are believed to have been? Twenty to twenty-five feet long.
Comment icon #6 Posted by Mandrake 15 years ago
Let's entertain the idea that if the earth was originally about 2 to 3 times bigger then it wouldn't be surprising that it was populated by giant fish and mammals. It would make sense. I believe something collided with the earth and knocked off a huge chunk and then it was smaller. So, all the huge mammals and fish became extinct and the earth repopulated with smaller mammals and fish and so forth. Anyone of the same thoughts? Ermmm....in a word....No. What evidence are you basing your 'belief' on?
Comment icon #7 Posted by Mandrake 15 years ago
A time machine and a fishing rod.....its all I ask...
Comment icon #8 Posted by Thomas Dialante 15 years ago
Let's entertain the idea that if the earth was originally about 2 to 3 times bigger then it wouldn't be surprising that it was populated by giant fish and mammals. It would make sense. I believe something collided with the earth and knocked off a huge chunk and then it was smaller. So, all the huge mammals and fish became extinct and the earth repopulated with smaller mammals and fish and so forth. Anyone of the same thoughts? Large animals could survive back then because there was more oxygen in teh air to sustain them. It has nothing to do with Earth's mass.


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