| • quaternary system | |
| चतुर्थ: quaternary Quaternary fourth | |
| शैलसमूह: formation rock formation | |
चतुर्थ महाकल्पी शैलसमूह in English
[ caturtha mahakalpi shailasamuh ] sound:
| • quaternary system | |
| चतुर्थ: quaternary Quaternary fourth | |
| शैलसमूह: formation rock formation | |
