(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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Habitat

Peloneustes philarchus lived in a warm shallow sea that covered parts of the UK during the Middle Jurassic.

It had a stream-lined body and large hydrofoil-like flippers that it used to swim through the water. This suggests a strictly aquatic lifestyle. It is unlikely it could venture onto land.

It would probably have given birth to live young like its evolutionary relatives the pachypleurosaurs.

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