Early Tertiary species of Azolla subg. Azolla sect. Kremastospora from western and arctic Canada
Species of Azolla subg. Azolla sect. Kremastospora Jain & Hall are described from samples of Early Tertiary age from the Ravenscrag Formation of Saskatchewan, the Paskapoo Formation of Alberta, and the Eureka Sound Formation of Banks Island, District of Franklin.Section Kremastospora is restrict...
Published in: | Canadian Journal of Botany |
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Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | French |
Published: |
Canadian Science Publishing
1976
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Subjects: | |
Online Access: | http://dx.doi.org/10.1139/b76-031 http://www.nrcresearchpress.com/doi/pdf/10.1139/b76-031 |
Summary: | Species of Azolla subg. Azolla sect. Kremastospora Jain & Hall are described from samples of Early Tertiary age from the Ravenscrag Formation of Saskatchewan, the Paskapoo Formation of Alberta, and the Eureka Sound Formation of Banks Island, District of Franklin.Section Kremastospora is restricted to include only Azolla teschiana Florschütz, A. bulbosa Snead, A. stanleyi Jain & Hall, and A. areolata n. sp. The relative phylogenetic position and stratigraphic significance of these species are discussed. |
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