Cretaceous
Albian
Vraconnian
Cenomanian
Turonian
ammonites
foraminifers
zones
zonation
Tethys
[SDU.STU.GC] Sciences of the Universe/Earth Sciences/Geochemistry
[SDE.MCG.CPE] Environmental Sciences/Global Changes/domain_sde.mcg.cpe
[SDU.STU.ST] Sciences of the Universe/Earth Sciences/Stratigraphy