WATCH RELATED VIDEO Submit "Left: This is an illustration of Metaspriggina swimming. This is a fossil of Metaspriggina from Marble Canyon -- head to the left with two eyes, and branchial arches at the top" Advertisement © 2017 HNGN, All rights reserved. Do not reproduce without permission. Advertisement 0 COMMENTS CLOSE COMMENT Get HNGN's Top Stories Newsletter Everyweek You have already subscribed. Thank you.