| Genus/Species | Aluminum | Arsenic | Barium | Cadmium | Iron | Lead | Manganese | Mercury | Nickel |
| Conodon nobilis | NA | −1 | NA | 1 | 1 | 0 | 0 | −1 | 0 |
| Genidens barbus and genidens | −1 | −1 | 0 | 0 | −1 | 0 | −1 | −1 | −1 |
| Macrodon ancylodon and atricauda | 2 | 2 | 2 | 0 | 2 | −1 | 2 | −1 | 0 |
| Paralonchurus brasiliensis | 0 | −1 | 0 | −1 | 0 | 0 | 0 | 0 | −1 |