Actual network (IMAGE) University of Texas at Austin Caption The researchers analyzed connections between 124,605 fossil collections, representing the entire history of marine animal life, and found that they can be grouped into 3,937 paleocommunities (shown here as colored dots). Credit Muscente et al. (2021, Geology) Usage Restrictions Include credit License Original content 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.