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Davallia (Polypodiales: Davalliaceae) macrofossils from Early Miocene Otago (New Zealand) with in situ spores |
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| Authors: | John G. Conran Uwe Kaulfuss Dallas C. Mildenhall |
| Affiliation: | a Australian Centre for Evolutionary Biology and Biodiversity, School of Earth and Environmental Sciences, Benham Bldg DX 650 312, The University of Adelaide, SA 5005, Australia b Department of Geology, University of Otago, PO Box 56, Dunedin, New Zealand c Department of Botany, University of Otago, PO Box 56, Dunedin, New Zealand d GNS Science, PO Box 30368, Lower Hutt, New Zealand |
| Abstract: | Fossil fern fronds referable to the extant fern genus Davallia (Polypodiales: Davalliaceae) bearing sporangia with in situ spores are described from the Early Miocene Foulden Maar diatomite deposit, Otago, New Zealand. The fronds are the first published Southern Hemisphere macrofossil record for the family and provide valuable palaeoclimate data supporting warm conditions in Early Miocene New Zealand. The matching of Davallia fronds to the form spore taxon Polypodiisporites radiatus shows that the genus has had a long, apparently continuous history throughout late Cenozoic New Zealand. |
| Keywords: | fossil fern Davalliaceae Davallia Smith Polypodiisporites radiatus Pocknall and Mildenhall Miocene New Zealand |
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