Overview
The Ministry of Science & Technology announced the discovery of four well‑preserved fossil leaves of the fragrant Kevda from the Makum Coalfield. The leaves date back to 24 million years ago, making them the oldest known specimens of this culturally important plant in the Indian subcontinent.
Key Developments
- Scientists from the Birbal Sahni Institute of Palaeosciences (BSIP) collected the fossils from the Tikak Parbat Formation.
- Morphological and microscopic analysis showed the fossils match modern Kevda leaves: long sword‑shaped blades, parallel veins and marginal prickles.
- Comparisons with global fossil records linked the Indian specimens to older Pandanaceae fossils from Europe and North America (85–66 million years old).
- The study, published in the journal Geobios, fills a 20‑million‑year gap in the evolutionary timeline of the family.
Important Facts
- Kevda belongs to the Pandanaceae family.
- Fossil evidence suggests Pandanaceae once had a wide Northern‑Hemisphere distribution before global cooling after 34 million years ago restricted it to tropical zones.
- India acted as a refugium, preserving ancient tropical lineages while they vanished elsewhere.
- The discovery underscores the role of past climate change in shaping present‑day Indian biodiversity.
Exam Relevance
This finding is relevant to several UPSC topics: (i) Geological time scales and the Miocene epoch; (ii) Biogeography – how plate movements and climate shifts influence plant distribution; (iii) Climate change – past events provide analogues for current warming trends; (iv) Conservation policy – recognizing India’s status as a biodiversity refuge can guide protected‑area planning; and (v) the functioning of research institutions like MoST and BSIP in advancing scientific knowledge.
Way Forward
To leverage this knowledge, the government should:
- Strengthen funding for palaeobotanical research in the Northeast, a biodiversity hotspot.
- Integrate fossil‑based climate insights into national climate‑change adaptation strategies.
- Design conservation programmes that protect refugial habitats identified through such studies.
- Promote interdisciplinary collaboration among geologists, botanists and policy makers.
These steps will help India preserve its unique plant heritage and improve preparedness for future ecological shifts.