OSMUNDA (OSMUNDACEAE) FROM THE TRIASSIC OF Antarctica: an example of evolutionary stasis

• Published in: American Journal of Botany
• Main Authors: Phipps, Carlie J., Taylor, Thomas N., Taylor, Edith L., Cúneo, N. Rubén, Boucher, Lisa D., Yao, Xuanli
• Other Authors: National Science Foundation
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1998
• Subjects: Plant Science; Genetics; Ecology, Evolution, Behavior and Systematics; Allan Hills; Antarc*; Antarctica
• Online Access: http://dx.doi.org/10.2307/2446424; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2307%2F2446424; https://onlinelibrary.wiley.com/doi/pdf/10.2307/2446424; http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.2307%2F2446424

Compressed specimens of the fern Osmunda are described from the Triassic of the Allan Hills, Antarctica. The specimens consist of a once pinnate, deeply pinnatifid fertile frond as well as several sterile specimens. Six pinnae are present on the partial fertile rachis, with two sterile pinnae above...