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Marine Reptiles of the Past

Switzerland Spalea Offline
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#16

A big mosasaur, kronosaurus, catching a plesiosaur, the tuarangisaurus. Upper Cretaceous.

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Switzerland Spalea Offline
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#17

Tylosaurus, Mosasaur, swimming close to Ginsu shark...
The Ginsu shark was a shark from the Early Cretaceous, 6-7 meters long, 1500-2000 kilos, like an extant big white shark although a little bit more massive. Discovered in 1843 by Louis Agassiz (Swiss scientist). Tylosaurus was one of the biggest Mosasaurus, 12-14 meters long, 10 tons.
Both were apex predators.

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Switzerland Spalea Offline
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#18

" Cretaceous ocean predators. The most famous was without doubt the mosasaurs, with the biggest species M. hoffmanni reached lengths up to 56 feet long. Another mosasaurs such as Tylosaurus and Hainosaurus also reached 40 to 46 feet long. Prehistoric sharks and predatory bony fish such as 26 feet long Cretoxyrhina, Squalicorax and devil fish Xiphactinus also ruled Cretaceous waters as top predators. "

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Switzerland Spalea Offline
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#19

The mosasaurs belong to the Squamata order which is the most important among the reptiles's:

" Mosasaurus is an extinct aquatic Squamata, the largest order of reptile which also comprising lizards and snakes. With over 10.000 species, Squamata is also the second largest order of extant vertebrates and equal in number to the Saurischia, one of two major ordo of dinosaurs. "

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Switzerland Spalea Offline
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#20

The proof that some marine reptiles like the Itchtyosaurs gave birth as the ancient and extant marine mammals have always done...

" 250 million year old fossil of an Ichtyosaur shows ancient Reptiles gave birth head first."

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