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17-05-2012, 18:24   #1
Adam Khor
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Turtles more related to dinosaurs than to lizards

According to DNA studies:

http://rsbl.royalsocietypublishing.o...31.short?rss=1

Alligator snapping turtle says it should have been obvious:







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17-05-2012, 23:49   #2
 
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I know crocodiles and dinosaurs are descended from archosaurs... Can't say I've looked much into the evolution of the turtle - although, I do remember earlier species having a hardened shell only on their stomach (possibly to protect against shark attacks).
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18-05-2012, 00:00   #3
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I know crocodiles and dinosaurs are descended from archosaurs...
They ARE archosaurs. And automatically that makes birds archosaurs (and reptiles) too...

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Can't say I've looked much into the evolution of the turtle - although, I do remember earlier species having a hardened shell only on their stomach (possibly to protect against shark attacks).
Which worked fine until crocs came along with their crushing jaws...
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18-05-2012, 00:17   #4
 
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They ARE archosaurs. And automatically that makes birds archosaurs (and reptiles) too...
Yes I know Just like we are apes, and also are descended from apes. When I say they evolved from archosaurs, I'm obviously referring to a primative archosaur, long extinct.


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Which worked fine until crocs came along with their crushing jaws...
Those pesky crocs!
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18-05-2012, 19:04   #5
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Which worked fine until crocs came along with their crushing jaws...
Well if they had sucking lips too..... can you imagine being sucked right out of your shell?

To be honest, surely we can probably say most reptiles, birds, and mammals around today are somehow related to dinosaurs and other vertebrates of the time. Especially as those designations also existed at the time of the dinosaurs.

To say a tortoise or turtle or whatever is related to a dinosaur group is admirable but not particularly enlightening without being more specific.

Now if you said it was descended from Triceratops, that would be amazing. But I assume it was descended from Carbonemys cofrinii or similar??
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18-05-2012, 19:14   #6
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Well if they had sucking lips too..... can you imagine being sucked right out of your shell?
Crocodiles with lips? It would ruin their smile :S

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To be honest, surely we can probably say most reptiles, birds, and mammals around today are somehow related to dinosaurs and other vertebrates of the time.
Well of course we are all related to one extent, but the point of the article is that turtles as a whole are more closely related to archosaurs than to lizards and kin.
They certainly weren´t descended from any dinosaurs.
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19-05-2012, 20:09   #7
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Carbonemys, a giant turtle

Found in Cerrejón, it is the earliest example of gigantism among freshwater turtles.
Interestingly, its massive jaws suggest it could eat anything it wanted. But I feel really bad for the little crocodile in the pic :S



http://www.sci-news.com/paleontology/article00324.html
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19-05-2012, 20:18   #8
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Not a good spot to go swimming. Giant crocs, giant snakes and even a giant flesh eating turtle!
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25-05-2012, 21:37   #9
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Crocodiles with lips? It would ruin their smile :S
Or would you give them a big kiss?




That's amazing news re: the turtles though. The archosauria just got a good bit bigger...
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26-05-2012, 22:48   #10
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Is it just me, or do the recent findings that turtles are in fact archosaurs make this big bugger even more terrifying?
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20-06-2012, 02:12   #11
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Prehistoric turtles died while having sex

And its not only a pair... but nine couples that suffered the same fate!

http://news.yahoo.com/coitus-interru...231206051.html

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20-06-2012, 14:54   #12
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Cue the almost inevitable comments ....
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20-06-2012, 22:05   #13
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They died the way they lived... God speed turtle dudes!
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21-06-2012, 18:38   #14
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They wanted to go out with a bang.
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12-07-2012, 23:48   #15
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Puentemys, the circular turtle

This turtle was found in Cerrejón, and lived 60 million years ago- meaning it coexisted with Titanoboa and Carbonemys. At about 1.52 meters long, Puentemys was huge for modern day standards, but small if compared to Carbonemys. Its peculiar trait was its shell, about the same shape and size as a car tire. According to scientists this shape probably helped the turtle to warm up faster in the sun AND helped it avoid being swallowed by Titanoboas.

http://phys.org/news/2012-07-fossil-...ombia-car.html


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