However , none of the teeth belonging to the fishes preserved in the Matanuska Formation fit the size or arrangement of the bite marks .
The depressions are the wrong shape to have been gastropod or sponge borings , so they are probably bite marks .
None of the teeth belonging to the fishes preserved in the Matanuska Formation fit the size or arrangement of the bite marks .
The depressions are the wrong shape to have been gastropod or sponge borings , so they are probably bite marks .