BERGGREN, W. A. et al. Part A, Introduction, Complete Volume. Treatise on Invertebrate Paleontology, [S. l.], 1979. DOI: 10.17161/dt.v0i0.5534. Disponível em: https://journals.ku.edu/InvertebratePaleo/article/view/5534.. Acesso em: 3 may. 2024.