Picea banksii n. sp. Beaufort Formation (Tertiary), northwestern Banks Island, Arctic Canada
作者： L. V. Hills , R. T. Ogilvie
DOI: 10.1139/B70-065
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摘要: Picea cones of late Tertiary age, from northwestern Banks Island, Arctic Canada, are described and illustrated. Extremely good preservation allowed measurements on cone length width, scale seed wing length, bract number teeth. In addition, ratios such as to width; length; calculated.Comparison is made with extant species it concluded that the fossil most closely related glauca. It suggested a glauca type was ancestral many Northern Hemisphere spruce.
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nrcresearchpress.com参考文章(6)
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