Thanks to unusually preserved soft tissue, researchers have reached a new identification.
“We tend to think of the ‘Cambrian explosion’ as a unique period in evolutionary history, in which all the blueprints of animal life were mapped out,” said study co-author Dr. Martin Smith of the Department of Earth Sciences, Durham University.
“Most subsequent evolution boils down to smaller-scale tinkering on these original body plans. But if Bryozoans truly evolved after the Cambrian period, it shows that evolution kept its creative touch after this critical period of innovation – may be the trajectory of life was not set in stone half a billion years ago,” he added.formerly thought to be the first Bryozoan, was discovered to have hitherto unobserved soft parts in ancient fossil material found in the hills of China.
“Instead of the tentacles we would expect to see in Bryozoans, we discovered simple leaf-like flanges – and realized we were not looking at fossil animals, but seaweeds. This means that the oldest convincing Bryozoan fossils do not evolve until the next geological period, the Ordovician.”
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