Since the moment when scientists discoveredfossils of one of the most ancient animals on Earth, more than half a century has passed. Creatures, whose fossilized footprints were found by them, were nicknamed dickinsonies and lived in the depths of the sea about 558 million years ago. What kind of animals they belong to, scientists are still unknown: perhaps they are the ancestors of jellyfish, worms, or even mushrooms. All this time, scientists were convinced that ribbed prints were traces of their bodies, but researchers from the Australian National University were confident that their bodies had a more complex structure.
According to a team of scientists led bybiogeochemist Ilya Bobrovsky, the famous casts of ancient animals can be simply casts of their skeleton, or hard tissue of the inner part of the body or back. This assumption opens up more questions and opportunities for scientists - ancient sea creatures could have a mouth, a stomach, and other organs that are inherent in modern animal life.
Based on this, scientists suggest that evenif the dicksonius did not have a skeleton, then tissues of different density precisely took place. Perhaps this is precisely the reason why the prints of ancient animals are so well preserved - researchers have long been unable to find an explanation for this.
The fact that dikinsoni are the most ancientanimals in the world, researchers guessed a few years ago. Then Bobrovsky and his team studied the molecules inside the fossil remains and found cholesterol in them. This fat was direct evidence that dikinsoni - the earliest ancestors of modern animals.
What do you think, how exactly did ancient creatures look like? Do you believe in a new theory of scientists? Write your bold assumptions in the comments, and you can discuss the topic in more detail in our Telegram-chat.