Ancient Ecosystems Organized Much Like Our Own (image) PLOS Share Print E-Mail Caption In this depiction of the food web of the Burgess Shale from the Middle Cambrian, spheres represent species or groups of species, and the links between them show feeding relationships. The drawing shows a top predator, Anomalocaris, chasing one of its likely prey species, the trilobite Olenoides, with arrows indicating their positions in the food web. Many aspects of the structure of this ancient ecological network are similar to the architecture of modern food webs. Credit Image: N. D. Martinez. Food web produced with Network3D software written by R. J. Williams; contact email@example.com for more details. Drawings courtesy of Sam Gon III, http://www.trilobites.info. Usage Restrictions If using this image please attribute to: N. D. Martinez Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.