Loading...
Please wait, while we are loading the content...
Similar Documents
On a new Cordaitean Stem, Cordaites Sahnii, from Central Shansi, China
| Content Provider | Birbal Sahni Institute of Paleobotany |
|---|---|
| Author | Hsu, Jen Bose, M.N. |
| Abstract | A silicified stem collected by F. L. Yuan from the Yang-Chb district ( 3r 8': 112° 6' ) of Central Shansi, China, is considered to be a new species of Cordaites. The pith is fairly large and discoid. The bark is represented by some layers of crushed tissues. The secondary wood consists only oftracheides and rays and is devoid of annual rings, resin canals and resin cells. Bordered pits are confined in the radial walls of tracheides and are generally uni- and biseriate, alternately arranged, and mostly flattened into hexagons. Triseriate pits are found only at the terminal part of racheides.The xylem rays are uni- to biseriate, about 1-10 cells high with bordered pits, confined in radial walls of ray cells. I n each "cross field" there are one to four elliptical bordered pits.The geological age of this fossil is thought to be Upper Carboniferous or Lower Permian.The specific name Cordaites Sahnii sp. nov. is suggested in memory of the late Professor B. Sahni. |
| Starting Page | 241 |
| Ending Page | 244 |
| File Format | |
| Volume Number | 1 |
| Language | English |
| Publisher Date | 1952-01-01 |
| Access Restriction | Open |
| Content Type | Text |
| Educational Use | Research Reading |
| Resource Type | Article |
| Education Level | Under Graduate Post Graduate |
| Subject | Paleobotany; fossil microorganisms |
