This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Tylomelania toradjarum shell. An apertural view of shell of Tylomelania toradjarum Sarasin Sarasin ber die Molluskenfauna der groen SwasserSeen von CentralCelebes Zoologischer Anzeiger org page org page page figure background retouched Paul Sarasin and Fritz Sarasin PDold Tylomelania Images from Zoologischer Anzeiger