Since the establishment of the genus Scleropteris based on sterile pinnae by Saporta in 1872, little has been reported about its fructification. Many palaeobotanists, however, believe that Scleropteris is a pteridospe...Since the establishment of the genus Scleropteris based on sterile pinnae by Saporta in 1872, little has been reported about its fructification. Many palaeobotanists, however, believe that Scleropteris is a pteridosperm closely related to Pachypteris Brongniart and Ctenopteris Saporta (i. e. Ctenozamites Nathorst), or is a composite genus. Barale was the first one to cast doubt on the pteridospermous nature of Scleropteris based on展开更多
20091168 Liu Yan(China University of Geosciences, Beijing 100083,China);Sun Keqin Study on the Permian Paleophytogeographical Provinces in Tibet(Geological Review,ISSN0371-5736,CN11-1952/P, 54(3),2008,p.289-295,2 illu...20091168 Liu Yan(China University of Geosciences, Beijing 100083,China);Sun Keqin Study on the Permian Paleophytogeographical Provinces in Tibet(Geological Review,ISSN0371-5736,CN11-1952/P, 54(3),2008,p.289-295,2 illus.,1 table, 34 refs.,with English abstract)展开更多
文摘Since the establishment of the genus Scleropteris based on sterile pinnae by Saporta in 1872, little has been reported about its fructification. Many palaeobotanists, however, believe that Scleropteris is a pteridosperm closely related to Pachypteris Brongniart and Ctenopteris Saporta (i. e. Ctenozamites Nathorst), or is a composite genus. Barale was the first one to cast doubt on the pteridospermous nature of Scleropteris based on
文摘20091168 Liu Yan(China University of Geosciences, Beijing 100083,China);Sun Keqin Study on the Permian Paleophytogeographical Provinces in Tibet(Geological Review,ISSN0371-5736,CN11-1952/P, 54(3),2008,p.289-295,2 illus.,1 table, 34 refs.,with English abstract)
