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, 7, Article e6088 DOI: 10.7717/peerj.6088