Fossile Flora der Bären-insel, Flora fossilis alaskana, Die miocene Flora und Fauna Spitzbergens, Contributions to the fossil flora of north-Greenland - Heer, Oswald <1809-1883>. (OLS)http://semarc/name/89251 (Flora fossilis arctica, 1871)
Keywords: Regioni artiche - Botanica. (OLS)http://semarc/subject/44569; Paleobotanica. (OLS)http://semarc/subject/44570