Definition: The term "calculifrage" is a term used in the context of the study of fossils and their interpretation. It refers to the process by which scientists and researchers use mathematical models and theories to analyze and interpret fossil records, often using computer simulations or other forms of digital technology. The goal is to understand how different species have changed over time through the accumulation and distribution of fossils, as well as to predict future changes in those same species based on their genetic makeup.