Extinct marine invertebrate

Extinct marine invertebrate

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This image is part of the feature Burgess Shale Centenary

Credit: SIMON TERREY/SCIENCE PHOTO LIBRARY

Caption: Extinct marine invertebrate. Computer artwork of Amiskwia sagittiformis, a marine invertebrate that is now extinct. Its fossils were discovered in the 500 million-year-old Burgess Shale rock formation in the Canadian Rocky Mountains. An avalanche of fine mud created these rocks and preserved soft tissue details rarely found in the fossil record. It also recorded a wide variety of newly evolved body shapes known as the Cambrian Explosion. Many of these body shapes survive today, but some, such as Amiskwia, are unique, with no clear link to any other animals, alive or extinct. It has tentacles on its head, and the fins and flattened tail imply it was a swimmer. It was up to 3 centimetres long.

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Keywords: amiskwia sagittiformis, ancient, animal, animals, artwork, burgess shale, cambrian explosion, early, evolution, evolutionary biology, extinct, failed, fossil invertebrate, fossils, illustration, invertebrates, marine, ocean, palaeontology, paleontology, plant, plants, sea, swimmer, swimming, unique

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