Changes in version 0.0.1.9000 - sepkoski_curve replaced by highly customisable sepkoski_curve_base - New sepkoski_curve function generates a ggplot2 plot/object - International Geological Time Scale updated to 2023 version Changes in version 0.0.1 (2022-11-23) Initial submission to CRAN (2022-11-21). First full release. Provides a light and easily-accessible solution to working with Sepkoski's compendium. Package includes: - Sepkoski's raw fossil marine animal genera compendium (Sepkoski, 2002). - Sepkoski's compendium with updated first and last appearance intervals to be consistent with international geological stages. - A table linking intervals in Sepkoski's compendium with the International Geological Time Scale 2022. - A function for plotting Sepkoski's evolutionary fauna for easy reproduction in presentations, articles, etc.