Siversson, M. & Lindgren, J. & Kelley, L.S. (2007)
Anacoracid sharks from the Albian (Lower Cretaceous) Pawpaw Shale of Texas. Palaeontology, 50(4), 939–950
DOI: 10.1111/j.1475-4983.2007.00691.x

Condamine, F.L. & Romieu, J. & Guinot, G. (2019)
Climate cooling and clade competition likely drove the decline of lamniform sharks. Proceedings of the National Academy of Sciences of the United States of America, 116(41), 20584–20590
DOI: 10.1073/pnas.1902693116