Jensen earned a PhD at Agricultural University in Copenhagen, and then worked for 40 years for the Ministry of Agriculture, Plant Directorate, at the Danish state seed testing station. His researches in paleobotany include publications on organic macrofossils, on the germination of ancient seeds, and archaeological investigations into seeds and crops in Viking-era Danish towns.[1]
Publications
Macrofossils and their Contribution to the History of the SpermatophyteFlora in Southern Scandinavia from 13000 BC to 1536 AD
