The researchers found similar to the “toothy” bag human ancestor
Paleontologists have found a common ancestor of all vertebrates – microscopic animals 540 million years of age, resembling leather bag with a huge mouth opening and the anus without.
This finding, scientists have discovered in the mountains of China.
Apparently, this is the most ancient ancestor deuterostome animals in which the mouth of the primary – blastopore – during embryonic development formed anus, mouth and then appears in front of the body. At the same protostomes blastopore is formed from the mouth, according to Gazeta.ru.