Having specialised in evolutionary biology, a field of biology that delves into the evolutionary processes, the expert has been collecting fossils for over a decade now. “People tend to associate paleontology with dinosaurs, but the subject traces plants and other animal fossils too. Every state in the country has several fossil sites, home to hundreds of fossils, that can point towards how the particular species has evolved over time. When I was new to collecting fossils, I was simply looking for different kinds, but now I try to examine how fossils changed over time periods – trying to understand what the environment was like millions of years ago,” elaborates Nirmal, who has unearthed over 1,000 specimens of fossils so far across Tamil Nadu and other regions.