1. Agnini, C., Fornaciari, E., Giusberti, L., Grandesso, P., Lanci, L., Luciani, V., et al. (2011). Integrated bio-magnetostratigraphy of the Alano section (NE Italy): A proposal for defining the Middle-Late Eocene boundary. Geological Society of America Bulletin,123(5/6), 841–872. doi:
10.1130/B30158.1
.
2. Berggren, W. A., Kent, D. V., Flynn, J. J., & Van Couvering, J. A. (1985). Cenozoic geochronology. Geological Society of America Bulletin,96, 1407–1418. doi:
10.1130/0016-7606(1985)96<1407:CG>2.0.CO;2
.
3. Berggren, W. A., Kent, D. V., Swisher III, C. C., & Aubry, M.-P. (1995). A revised Cenozoic geochronology and chronostratigraphy. In W. A. Berggren et al. (Eds.), Geochronology, Time Scales and Global Stratigraphic Correlation (pp. 129–212). Tulsa: Society for Sedimentary Geology Special Publication 54.
4. Fornaciari, E., Agnini, C., Catanzariti, R., Rio, D., Bolla, E. M., & Valvasoni, E. (2010). Mid-latitude calcareous nannofossil biostratigraphy and biochronology across the middle to late Eocene transition. Stratigraphy,7, 229–264.
5. Gradstein, F. M., Ogg, J. G., & Smith, A. G. (Eds.). (2004). A Geologic Time Scale 2004 (p. 589). Cambridge: Cambridge University Press.