1. Digital Atlas of Ancient Life: The Digital Atlas of Ancient Life is an interactive website that provides various paleogeographic maps, including maps showing the distribution of prehistoric marine creatures like the megalodon.
2. The Paleogeography Project: The Paleogeography Project is a collaborative effort by paleontologists, geologists, and geographers to reconstruct ancient Earth's geography. It includes maps that depict the distribution of different species throughout Earth's history, including the megalodon.
3. Oceanographic Research Organizations: Some oceanographic research organizations, such as the National Oceanic and Atmospheric Administration (NOAA) and the Scripps Institution of Oceanography, may have datasets and maps related to the distribution of prehistoric marine species like the megalodon. These datasets can be accessible through their online resources or upon request.
4. Scientific Publications and Books: Many scientific publications and books on paleontology or marine biology may contain maps or figures showing the distribution of ancient species, including the megalodon. These resources can be found in university libraries, research institutions, or online scientific databases.
Keep in mind that the exact distribution of the megalodon may vary depending on the specific time period or the interpretation of the available data. It's recommended to consult multiple sources to obtain a comprehensive understanding of the megalodon's distribution during its time.