What were the remains of human and animal bones preserved in earths crust called?

The remains of human and animal bones preserved in the Earth's crust are called fossils. Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. They are usually formed when the organism's hard parts, such as bones, teeth, or shells, are buried in sediment and over time become mineralized or replaced with other minerals. Fossils provide important information about the history of life on Earth and the evolution of different species. They also play a role in understanding past climates, environments, and geological events.