I doubt their rings would fossilize as the rings are easily lost when you grind them down in fresh samples. Actually, I have had some samples where the statolith has disintegrated completely while trying to remove it.
As for the "needle in a haystack" comment, the statoliths aren't too hard to find after a while. It just takes some patience and about 100 specimens of practice
As for the "needle in a haystack" comment, the statoliths aren't too hard to find after a while. It just takes some patience and about 100 specimens of practice