DONOVAN, Desmond T.; RIEGRAF, Wolfgang. Treatise Online no. 78: Part M, Chapter 21: History of the Study of Fossil Coleoidea. Treatise Online, [S. l.], 2016. DOI: 10.17161/to.v0i0.5872. Disponível em: https://journals.ku.edu/treatiseonline/article/view/5872.. Acesso em: 6 may. 2024.