Possible ancestor of sponges found

Exquisite details of 600-million-year old fossil similar to cell structure seen in today’s marine animals

sponge fossil

TINY BUT EXQUISITE  A scanning electron micrograph of a fossil just 1.2 millimeters wide, found in southern China, has a shape and some details that look like sponges.

Image courtesy of Zongjun Yin.

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