a foundational or earliest state or area, often referring to environmental or ecological contexts

प्रारंभिक क्षेत्र

English Usage: The primordial zone of the rainforest is home to many ancient species.

Hindi Usage: वर्षावन का प्रारंभिक क्षेत्र कई प्राचीन प्रजातियों का घर है।