SEDIS - Thesaurus
Madrid Formation  | |
|---|---|
| RT | Connecticut |
| Maine | |
| Massachusetts | |
| Mexico | |
| New Hampshire | |
| Silurian | |
| SN | Silurian of Connecticut, Maine, Massachusetts and New Hampshire. Also a formation in Mexico. Indexed with age as applicable. Added to Thesaurus in 1989. |
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