For Scientists, the anatomy of these animals pluribranche maximizes the body Surface and is consistent with the osmotrophie, power fashion of Filter feed , from substances dissolved in the seawater.

Because Rangéomorphes were radically different from all known forms of life, scientists knew little about how these creatures lived, were breeding or foraged.  We now know that these primitive animals were well adapted to their environment.  © Verisimilus, Wikimedia Commons, cc by sa 2.5

These filter almost perfectly optimize their anatomical surface

"Geometrically speaking, they were well organized to do it, capable of creating the largest possible area of absorption in any space they occupied, " says Jennifer Hoyal Cuthill from the University of Cambridge, UK , lead author of the article published in the journal Proceedings of the National Academy of Sciences .

This result is consistent with the ecological conditions of the time: the competitors and predators were absent and the ocean environment rich in microscopic nutrients. Enjoycoloring.com "Oceans of Ediacaran more like a coarse soup, full of nutrients such as carbon organic, while nowadays, food particles in suspension are quickly collected by a myriad of animals, " says co-author Simon Conway Morris, a paleontologist at the University of Cambridge study.

With the explosion of multicellular life in the Cambrian period , the Rangéomorphes became extinct, there are about 540 million years. The supposed causes are competing for nutrients with other agencies, predation and depletion of specific resources they needed.