Public domain photos

The image shows a piece of rock with a ruler next to it on a brown surface. The rock appears to be a brachiopod, a type of fossilized fish, and the ruler is likely used to measure the size of the rock.

The image shows a piece of rock with a ruler next to it on a brown surface. The rock appears to be a brachiopod, a type of fossilized fish, and the ruler is likely used to measure the size of the rock.Open in library