English: The evolution of the modern great white shark (Carcharodon carcharias) can be traced through a mosaic of transitional fossils, which demonstrates the development of serrations over time from the unserrated ancestor (Carcharodon hastalis) through the transitional species (Carcharodon hubbelli). Contrary to popular belief, C. hastalis is not a type of mako shark; it is a member of an independent lineage that diverged from the mako sharks around 43 m.y.a. (Bernal et al., 2001). The approximate temporal range of the C. hubbelli transition is based on Boessenecker et al. (2019).

References:

• Bernal, D., Dickson, K. A., Shadwick, R.E., & Graham, J. B. (2001). Review: Analysis of the Evolutionary Convergence for High Performance Swimming in Lamnid Sharks and Tunas. Comparative Biochemistry and Physiology, Part A: Molecular and Integrative Physiology, 129(2–3):695–726.
• Boessenecker, R. W., Ehret, D. J., Long, D. J., Churchill, M., Martin, E., Boessenecker, S. J. (2019). The Early Pliocene extinction of the mega-toothed shark Otodus megalodon: a view from the eastern North Pacific. PeerJ: e6088.