From the album: Fossils from the Plattenkalke of the Altmühl Valley
Fossil jellyfish are rarities. They are soft, consist almost only of water and have no substance that fossilises well. They are very rare in the Plattenkalken, but some have been found over the centuries. Even rarer than jellyfish are medusae. One of these specimens, which is rarer than a pterosaur, is shown here. An almost complete specimen of Hydrocraspedota mayri, about 18 cm in diameter. Found in Pfalzpaint
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