A fossilized seed is called a fossil seed. When a seed or its remains are preserved in the fossil record, it can undergo various processes that lead to fossilization. Fossil seeds provide valuable information about ancient plant species, their reproductive strategies, and their adaptations to different environments. Fossil seeds can be used to study the evolution of plants, track changes in seed morphology, understand ancient plant communities, and reconstruct past environments. Fossil seeds have been found in various types of deposits, including sedimentary rocks, shale, coal, and fossil-rich formations. They can provide important insights into the diversity and evolution of plants throughout geological time.