Template:Örvig, 1969a

• Örvig, T. 1969. Vertebrates from the Wood Bay Group and the position of the Emsian-Eifelian boundary in the Devonian of Vestspitsbergen. Lethaia 2: 273-328. Oslo. DOI: 10.1111/j.1502-3931.1969.tb01254.x  
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