Valdar Jaanusson

Valdar Jaanusson (1923 – August 28, 1999) was an Estonian-Swedish geologist.^[1] In 1960, he introduced the concept of topostratigraphy into Swedish stratigraphy.^[2] A recognized expert on the geology of the Ordovician period, he was member of the Estonian Academy of Sciences.^[3]

Valdar Jaanusson
Born	1923 Nömme, Tallinn
Died	August 28, 1999 Täby, Stockholm
Nationality	Swedish
Citizenship	Sweden
Alma mater	Uppsala University
Known for	Confacies Jaanusson effect Ordovician geology Topostratigraphy
Scientific career
Fields	Stratigraphy
Institutions	Uppsala University Geological Survey of Finland Swedish Museum of Natural History