![Sample our Environment & Agriculture journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5934/TOC-Subject-Sample-2021-Environment-Agriculture.jpg"})
Abstract
The present paper is a review of a lecture on Tertiary charophytes as stratigraphic markers presented to the Geological Society of Stockholm in 1960 by the late Dr. Henning Horn af Rantzien.
Charophyte fructifications, or gyrogonites, are potentially useful as stratigraphic indicators because of the rapid phylogenetic development and the wide horizontal distribution of the charophytes and the abundant production of resistant gyrogonites. They can be applied to the stratigraphic correlation of calcareous limnic deposits and may thus become a valuable complement to pollen and spores, which are generally poorly preserved in calcareous rocks. Several paleobotanical investigations of fossil charophytes have been carried out in recent years, but they should be accompanied by more specialized stratigraphic analyses. For the time being it is mainly organ genera that can be used in the correlation of higher stratigraphic units, although units at a specific level can be useful locally.