“Animals and plants buried underground for millennia are called:”

"Fossils are preserved remains or traces of animals and plants buried underground for millions of years. Formed through mineralization they provide evidence of past life aiding in understanding Earth’s biological history. Found in sedimentary rocks fossils reveal evolutionary patterns and environmental conditions. Paleontologists use them to reconstruct ancient ecosystems. Studying fossils enhances knowledge of biodiversity and extinction events shaping Earth’s historical narrative and scientific research."