Ancylus scalariformis, ein an exceptional example of morphological change from Lake Ohrid. (IMAGE) Staatliche Naturwissenschaftliche Sammlungen Bayerns Caption Ancylus scalariformis, ein an exceptional example of morphological change from Lake Ohrid. Credit Tom Wilke, Gießen Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.