HOW A JELLYFISH CAN TURN TO STONE:50 YEARS OF STUDYING LAGERSTäTTEN

The familiar concept of fossils depicts shells, dinosaur bones, and shark teeth - things that have a chance to slowly and gradually saturate with mineral substances from the environment or, at the very least, not disappear completely under the pressure of ubiquitous bacteria- destructors. However, this concept is outdated: for half a century, paleontologists have been studying fossils of animals that lacked hard, resistant structures such as shells, bones, spines, and teeth. In their research collections, there are jellyfish, comb jellies, worms, shrimps, and embryos.