Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Barren Measures  | |
|---|---|
| RT | India |
| Middle Permian | |
| SN | Middle Permian. Northeastern Indian coal fields. Underlies Raniganj Stage; overlies Barakar Formation. Indexed with age or ages as applicable. Added to Thesaurus in 1993. |