A Cretaceous sponge in a flint nodule. As regards to preseservation it has to be my best. They're really hard to extract from the nodules as they can break into small pieces from the force of the hammer. This sponge is just over 65 million years old and is from the upper chalk. pic.twitter.com/vvLCHoBvMF
— Jurassic Coast Guide (@jurassicguides) January 22, 2019
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January 22, 2019 at 10:27PM
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