. Fossil plants : for students of botany and geology . Paleobotany. XXI] DIPTERIDINAE 387 Brongniart's specimens has convinced Nathorst of the specific identity of C. meniscoides and C. platyphylla. The Tonkin leaves described by Zeiller^ under the latter name should, therefore, be included in C. meniscoides, which may be thus defined:. Fio. 285. Clathropterit meniscoides. From Rhaetic rocks near Erlangen. [] The petiolate frond is characterised by an equal dichotomy of the rachis, as in Dictyophyllnm ; each branch bore 5—15 pinnae, disposed en eventail, reaching a length of 20—30 cm. and
. Fossil plants : for students of botany and geology . Paleobotany. XXI] DIPTERIDINAE 387 Brongniart's specimens has convinced Nathorst of the specific identity of C. meniscoides and C. platyphylla. The Tonkin leaves described by Zeiller^ under the latter name should, therefore, be included in C. meniscoides, which may be thus defined:. Fio. 285. Clathropterit meniscoides. From Rhaetic rocks near Erlangen. [] The petiolate frond is characterised by an equal dichotomy of the rachis, as in Dictyophyllnm ; each branch bore 5—15 pinnae, disposed en eventail, reaching a length of 20—30 cm. and fused basally as in D. Nathorsti Zeill. Pinnae linear lanceolate, slightly contracted at the 1 Zeiller (03).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press
Size: 1525px × 1639px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
