Discover the captivating world of ancient parasitic fungi preserved in 99-million-year-old amber, which reveals predator-prey relationships from the Cretaceous period. This book examines the groundbreaking discovery of the Paleoophiocordyceps species, which manipulated ants and flies, shaping prehistoric ecosystems. Through advanced imaging techniques, such as micro-computed tomography, and paleontological research, this book uncovers the evolutionary history of entomopathogenic fungi and their role in ancient biodiversity. Addressing ethical considerations surrounding Myanmar amber sourcing, it advocates for responsible practices in paleontology. Ideal for researchers, students, and enthusiasts of paleomycology, this book details the complexity of ancient ecological dynamics and their relevance to modern science, offering profound insights into Earth's biological past.