Continuing on the week's theme with a teaser for tomorrow's paper drop, check out the change in growth strategies between the derived protostegid sea turtle Protostega (first picture), and the more basal protostegid Desmatocheyls (second picture).

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Did somebody say And also this is protostega!

Made using

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Ok one more easy1 - my for the exhibit I did for + features a GIANT Protostega that lived around 80 million years ago in the big shallow sea that covered & the rest of the middle of the US.

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Both & are based on prehistoric sea specifically  for Tirtouga and for Carracosta, with Archelon being bigger than Protostega.

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Las mas grandes:

1 - Archelon. Vivió hace 75 millones de años.

2- Carbonemys. Vivió hace 60 millones de años.

3- Stupendemys. Vivió hace 6 millones de años .

4- Megalochelys atlas. Vivió hace 2 millones de años.

5- Protostega. Vivió hace 80 millones de años .

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was a giant marine that lived in the ancient seas that covered the middle of N America abt 83 million yrs ago. It is 1 of many awesome beasts I've made of in collab w for the traveling exhibit

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Making of Protostega gigas, the giant sea turtle from the Cretaceous for upcoming poster of Niobrara Chalk

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