dinosaurios Club
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 Prognathodon
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Monsters Resurrected - Biggest Killer Dino
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dinosaurios
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Source: VengeanceFromTheDeep.com
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Source: 31/07/2010
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While decades of research point to an asteroid impact at Chicxulub crater as the end of the dinosaurs' reign 66 million years ago, scientists weren't always so sure what happened to these mesmerizing creatures.
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Source: wallpapersafari.com
Long trailer for Vengeance From The Deep novel series
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posted by GabsSaw
Liverworts grew on mats of blue-green algae, which trapped nitrogen from the air. They used this nitrogen to grow.

Spriggina has a curved, shieldlike end to one part of its body. Some paleontologists think this was its head, while others think it was an anchor that secured it to the seabed.

Hemicyclaspis had eyes on parte superior, arriba of its head. This suggests it lived on the seabed and used its eyes to keep a look out for predators above.

Another difference between jawed and jawless pescado was that jawed pescado had a pair of nostrils, while jawless pescado had just one.

Prehistoric sharks' jaws were fixed to the side...
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