Byjus 1

Byjus  2

| **Key Event**            | **Details**                                                                 |
|------------------------|---------------------------------------------------------------------------|
| **Discovery**          | A **24-million-year-old fossil leaf** discovered in **Makum Coalfield**, Assam. |
| **Location**           | **Tikak Parbat Formation**, Tirap Colliery, Tinsukia district, Assam.     |
| **Age**                | **Late Oligocene epoch**, approximately **24-23 million years ago**.      |
| **Scientific Research**| Led by **Harshita Bhatia** and **Gaurav Srivastava** of **Birbal Sahni Institute of Palaeosciences (BSIP), Lucknow**. |
| **Fossil Identification** | Identified as **Tetrameristophyllum makumensis**, closely resembling **Tetramerista glabra**. |
| **Possible Causes of Disappearance** | Changes in **hydrology, landscape structure, wetland habitats, tectonic and geomorphological changes**, including **Himalayan development** and **Asian monsoon systems**. |

Key Event	Details
Discovery	A 24-million-year-old fossil leaf discovered in Makum Coalfield, Assam.
Location	Tikak Parbat Formation, Tirap Colliery, Tinsukia district, Assam.
Age	Late Oligocene epoch, approximately 24-23 million years ago.
Scientific Research	Led by Harshita Bhatia and Gaurav Srivastava of Birbal Sahni Institute of Palaeosciences (BSIP), Lucknow.
Fossil Identification	Identified as Tetrameristophyllum makumensis, closely resembling Tetramerista glabra.
Possible Causes of Disappearance	Changes in hydrology, landscape structure, wetland habitats, tectonic and geomorphological changes, including Himalayan development and Asian monsoon systems.

24-Million-Year-Old Fossil Leaf Found in Assam