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Contact: Cherry Lewis
cherry.lewis@bristol.ac.uk
44-117-928-8086
University of Bristol
Caption: Embryos of the penis worm (Markuelia) from the Cambrian of China and Siberia. Images: a-b: two views of the whole embryo; b-f: successively lower rings of teeth around the mouth; g-j: anus and digestive tract; i-j: spines around the anus.
Credit: Phil Donoghue
Usage Restrictions: Only to be used to accompany article about this work.
Related news release: Evolution of the penis worm
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