Downloadable wallchart and pocket chart. For a complete account of methods and revisions, see:
Clowes CD, Crampton JS, Bland KJ, Raine JI, Boyes AF, Campbell HJ, Crouch EM, Crundwell MP, Hudson N, Kennedy EM, et al. 2026. New Zealand Geological Timescale 2025. New Zealand Journal of Geology and Geophysics. https://doi.org/10.1002/jgo2.70012
