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Osmundites Sahnii sp. nov., a new species of petrified osmundaceous rhizomes from India
| Content Provider | Birbal Sahni Institute of Paleobotany |
|---|---|
| Author | Vishnu-Mittre |
| Abstract | The paper describes a petrified osmundaceousrhizome discovered from near Bmdrabun m theJurassic of the Rajmahal Hills, Bihar.The specimen made up of vertically growing leaf bases and roots, includes three stems in it. Each stem has a broad sclerenchymatous outer cortex, surrounding a narrow inner cortex. The stele consists of 50-70 individual strands arranged in a circle surrounding the sclerenchymatous pith. Most of the strands are continuous with one another. The medullary strands are absent. The C-shapedleaf traces are each enclosed in a sclerotid ring with several protoxylem groups. Several sclerenchymatous strands are found scattered in the pith of the trace as well as in the stipular wing. No sclerenchymatous tissue is noticed in contact with the stele of the leaf trace.The specimen differs from the other Jurassicspecies of Osmundites in the distribution of sclerenchymatous strands in the leaf bases. |
| Starting Page | 113 |
| Ending Page | 118 |
| File Format | |
| Volume Number | 4 |
| Language | English |
| Publisher Date | 1955-01-01 |
| Access Restriction | Open |
| Content Type | Text |
| Educational Use | Research Reading |
| Resource Type | Article |
| Education Level | Under Graduate Post Graduate |
| Subject | Paleobotany; fossil microorganisms |
