Picea banksii n. sp. Beaufort Formation (Tertiary), northwestern Banks Island, Arctic Canada
Picea cones of late Tertiary age, from northwestern Banks Island, Arctic Canada, are described and illustrated. Extremely good preservation allowed measurements on cone length and width, scale length and width, seed wing length, and bract length, width, and number of teeth. In addition, ratios such...
| Published in: | Canadian Journal of Botany |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1970
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/b70-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/b70-065 |
| Summary: | Picea cones of late Tertiary age, from northwestern Banks Island, Arctic Canada, are described and illustrated. Extremely good preservation allowed measurements on cone length and width, scale length and width, seed wing length, and bract length, width, and number of teeth. In addition, ratios such as scale length to width; seed length to width; seed length to scale length; and bract length to scale length are calculated.Comparison is made with extant species of Picea and it is concluded that the fossil is most closely related to Picea glauca. It is suggested that a Picea glauca type was ancestral to many Northern Hemisphere spruce. |
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