Code Main template Sandbox version
{{Period start ref|Cretaceous}}
{{reflist}}
[1]
  1. ^ Cohen, K.M.; Finney, S.C.; Gibbard, P.L.; Fan, J.-X. "International Chronostratographic Chart v 2020/01" (PDF). Stratigraphy.org. International Commission on Stratigraphy. Retrieved 22 March 2020.
[1]
  1. ^ Cohen, K.M.; Finney, S.C.; Gibbard, P.L.; Fan, J.-X. "International Chronostratographic Chart v 2020/01" (PDF). Stratigraphy.org. International Commission on Stratigraphy. Retrieved 22 March 2020.
{{Period start ref|Cretaceous|noref}}
{{reflist}}}}
Cohen, K.M.; Finney, S.C.; Gibbard, P.L.; Fan, J.-X. "International Chronostratographic Chart v 2020/01" (PDF). Stratigraphy.org. International Commission on Stratigraphy. Retrieved 22 March 2020.
Cohen, K.M.; Finney, S.C.; Gibbard, P.L.; Fan, J.-X. "International Chronostratographic Chart v 2020/01" (PDF). Stratigraphy.org. International Commission on Stratigraphy. Retrieved 22 March 2020.
{{Period start ref|nonsense}}
{{reflist}}
Missing geologic age reference: nonsense
Missing geologic age reference: nonsense
{{Period start ref|nonsense|noref}}
{{reflist}}
Missing geologic age reference: nonsense
Missing geologic age reference: nonsense