Referring to a period in geological time consisting of the last 2.6 million years, characterized by the presence of humans.

क्वाटरनरी काल की अवधारणा

English Usage: The quarternary period has seen significant climatic changes.

Hindi Usage: क्वाटरनरी काल ने महत्वपूर्ण जलवायु परिवर्तनों को देखा है।