Vullo, R. & Villalobos-Segura, E. & Amadori, M. & Kriwet, J. & Frey, E. & González, M.A.G. & Gutiérrez, J.M.P. & Ifrim, C. & Stinnesbeck, E.S. & Stinnesbeck, W. (2024)
Exceptionally preserved shark fossils from Mexico elucidate the long-standing enigma of the Cretaceous elasmobranch Ptychodus. Proceedings of the Royal Society B-Biological Sciences, 291(2021), Article 20240262
DOI: 10.1098/rspb.2024.0262

Vullo, R. & Frey, E. & Ifrim, C. & González, M.A. & Stinnesbeck, E.S. & Stinnesbeck, W. (2021)
Manta-like planktivorous sharks in Late Cretaceous oceans. Science, 371(6535), 1253–1256
DOI: 10.1126/science.abc1490