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:
Triceratops prorsus old skull. Triceratops prorsus skull Triceratopsprorsusold UTC Triceratopsprorsusold Marsh derivative work MathKnight Triceratops prorsus old skull isolated skull MathKnight Triceratopsprorsusold PDold Original upload log This image is derivative work of the following images File Triceratopsprorsusold