This is a scanning electron microscope image of the
surface of a modern scallop shell dredged off the North Island
of New Zealand from 33 metres depth. The scratches in the upper
right quadrant were made by some sort of grazer with a radula,
such as a gastropod or chiton. If these were fossils they would
be called Radulichnus. (Return to the main Bioerosion
page.)
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