Friday, June 28, 2013

Most Primitive Echinoderm Discovered

LiveScience has a story on the discovery of the oldest echinoderm ever discovered, some 520 million years old.  Tia Ghose writes:
The newfound species, Helicocystis moroccoensis, has "characteristics that place it as the most primitive echinoderm that has fivefold symmetry," said study co-author Andrew Smith, a paleontologist at the Natural History Museum in London, referring to the group of animals that includes starfish and sea urchins.
Pushing our understanding of how life developed even further.

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