Lake Zambrana, 37 million years ago (IMAGE) University of the Basque Country Caption Detail of the margin of Lake Zambrana (&Aacute;lava) from 37 million years ago. On the left the new species of paleoterid 'Leptolophuscostiai' and in the center and on the right another equoid perissodactyl, 'Pachynolophus zambranen Credit Paleoillustration: Ulises Martínez Cabrera. Usage Restrictions None 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.