What is the Pleniglacial age?
The Pleniglacial is a stage of the Weichselian Chronostratigraphy which is divided in three stubstages (early, middle and late). You can compare the absolute age to the geologic time scale.



(Data from:
Kasse, C., Huijzer, A. S., Krzyszkowski, D., Bohncke, S. J. P. and Coope, G. R. (1998), Weichselian Late Pleniglacial and Late-glacial depositional environments, Coleoptera and periglacial climatic records from central Poland (Bełchatów). J. Quaternary Sci., 13: 455–469. doi: 10.1002/(SICI)1099-1417(1998090)13:5&lt;455::AID-JQS398>3.0.CO;2-T)