Entity C09-2 (entity_id = 390): Due to the way the age model was constructed (see Warken et al., 2018), lamina counting chronology (dating_lamina) with exact depth, year and uncertainty cannot be provided. The author recommend using the original age model. Bchron (the age model used here) models a short growth slow down at the position of each dating point; this is an artefact from the age model software used and there are no real hiatuses.