The freshwater fern Azolla (Azollaceae) from Eocene Arctic and Nordic Sea sediments : new species and their stratigraphic distribution.

Johan van der Burgh, Margaret Collinson, Han van Konijnenburg-van Cittert, Judith Barke, Henk Brinkhuis

Research output: Contribution to journalArticlepeer-review

Original languageEnglish
Pages (from-to)50-68
JournalReview of Palaeobotany and Palynology
Publication statusPublished - 2013

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