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The atlas · Prehistoric life · Reptiles of sea and sky

Outline · being written

Sea reptiles

Ichthyosaurs, plesiosaurs and mosasaurs: reptiles that went back to the sea.

The working diagram The three groups side by side at true size, with a diver for scale.
Page type
A lesson, led by a working diagram
Collection
Prehistoric life, reptiles of sea and sky
When
About 250 million years ago to 66 million years ago, in the Triassic, Jurassic and Cretaceous. The finished piece will give dates from its sources.
Status
Planned and outlined. Every fact in it will be checked against a named source and listed on Sources before it goes up.

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