The Deuterostomes

in nature •  7 years ago 

d41586-017-08492-y_15302398.jpgFEARSOME FOSSIL: Meet Saccorhytus coronarius, a millimetre-scale fossil at least 529 million years old. The species, reported in January, might be the oldest known member of the deuterostomes, the animal group that includes vertebrates.

Credit: Jian Han

nature visionary science animal photo
7 years ago by

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