7-Foot-Long 'Sea Monster' Was Ancestor of Shrimp : DNews — news.discovery.com

Early ancestors of today’s shrimp were huge, yet peaceful, creatures, suggests a new study that sheds light on these gentle giants that lived around 485 million years ago. The animals, described in the latest issue of the journal Nature, are called anomalocaridids, and they lived more like today’s enormous baleen whales than modern tiny shrimp. Underwater World Captured in Stunning Photos Lead author Peter Van Roy of Yale University and Ghent University, with colleagues Allison Daley and Derek Briggs, focused on the remains of a particular anomalocaridid, Aegirocassis benmoulae. It grew to become about 7 feet long.

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