SEDIS - Thesaurus
Maravillas Formation  | |
|---|---|
| RT | Upper Cretaceous |
| Upper Ordovician | |
| Texas | |
| Puerto Rico | |
| SN | Upper Ordovician of W Texas. Also, an Upper Cretaceous formation in Puerto Rico. Indexed with ages as applicable. Added to Thesaurus in 1989. |
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