Crocodile Scene (IMAGE) American Museum of Natural History Caption This reconstruction shows proto-Amazonian "mega-wetland" swamps from the late middle Miocene (about 13 million years ago) and the three new species of crocodiles discovered from fossils uncovered in northeastern Peru: Kuttanacaiman iquitosensis (left), Caiman wannlangstoni (right), and Gnatusuchus pebasensis (bottom). The extinct caimans are thought to have thrived on the unusually high abundance and diversity of mollusks like clams and snails that lived in the area. Credit © Javier Herbozo Usage Restrictions Can be used with appropriate credit License Licensed 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.