Opportunity Sol 222 Microscopic Imager
Click an image to see the detailed view
| Blue circle: the imprint of an urchin showing the mouth and the radial pattern of the shell |  |
Yellow circle: the imprint of an urchin mouth and shell, nearly identical to the urchin itself in the red circle |  |
| Green circle: the dried mud split away from the urchin itself. It shows the negative or imprint of the urchin's mouth and shell. |  |
Red circle: this is a perfect sea urchin fossil. It shows the mouth and shell very clearly. |  |