Allonnia nuda lived more than half a billion years ago and could be related to sponges
An article published in the journal “Proceedings of the Royal Society B: Biological Sciences” describes the discovery of an organism that shows similarities with sponges dating back to more than half a billion years ago which was named Allonnia nuda. A team of researchers examined the fossils discovered in China and classified it within the chancelloriid family, whose relationship with other animals is controversial.