Fascisvarioxylon mehtae gen. et sp. nov., a new petrified Cycadean wood from the Rajmahal Hills, Bihar, India
DOI:
https://doi.org/10.54991/jop.1962.633Abstract
A new petrified stem from the Rajmahal Hills, Bihar, is described and named Fascisvarioxylon mehtae gen. et sp. nov. This wood is compared with the members of the extant family Cycadaceae in having eternal armour of foliage and scale-leaf bases, parenchymatous internal 1issues, broad pith with medullary bundles, single normal vascular ring surrounding the pith and cortex with leaf traces. It is also compared with some Palaeozoic woods especially, the Medullosa and Lyginopteris, in its mesarch condition of vascular bundles and a tendency to form groups of xylem elements. The Mesozoic cycadophytic genera Cycadeoidea, Bucklandia, Sahnioxylon and Michelilloa have also been compared.
Downloads
Metrics
References
ARCHANGELSKY, S. & BRETT, D. W. (1963). Studies on Triassic fossil plants from Argentina II. Michelilloa waltonii nov. gen. et sp. from the Ischigualasto formation. Ann. Bot. N. S., 27(105). 147-154.
BANCROFT, N. (1914). Pteridosperm anatomy and its relation to that of the Cycads. New Phytol., 13 (1-2): 41-68.
BOSE, M. N. (1953). On some fossil cycadean stems from the Rajmahal hills Bihar. The Palaeobotanist 2: 71-74. https://doi.org/10.54991/jop.1953.434
Idem (1953a). Bucklandia sahnii sp. nov. from the Jurassic of Rajmahal hills, Bihar. The Palaeobotanist 2: 41-50. https://doi.org/10.54991/jop.1953.430
BOSE, M. N, & SAH, S. C. D. (1954). On Sahnioxylon rajmahalense, a new name for Homoxylon rajmahalense, and S. andrewsii, a new species of Sahnioxylon from Amrapara in the Rajmahal hills, Bihar. The Palaeobotanist 3: 1-8. https://doi.org/10.54991/jop.1954.453
GUPTA, K. M. (1960). On the anatomy of a new cycadean type of stem, Sewardioxylon sahnii gen. et sp. nov. Gupta from the Jurassic of Rajmahal hills, Bihar. Proc. 47th Indian Sci. Congr., Pt. 3: 428.
KRAUSEL, R. et al. (1961) Gymnospermous woods with primary structures from Gondwana rocks – A review. The Palaeobotanist 10 (1-2): 97-107. https://doi.org/10.54991/jop.1961.612
MARSH, A. S. (1914). Notes on the anatomy of Stangeria paradoxa. New Phytol. 13: 18.
OLDHAM, T. & MORRIS, J. (1863). Fossil flora of the Rajmahal Series in the Rajmahal hills Palaeont. Indica. 1 (i): 1-52.
SCOTT, D. H. (1897). The anatomical characters presented by the prduncle of the cycadaceae. Ann. Bot., 11: 399.
Idem (1909). Studies in Fossil botany. 2. London.
WORDSEL, W. C. (1896). The anatomy of the stem of Macrozamia compared with that of other genera of cycadeae. Ann. Bot., 10: 601.
Idem (1898). The comparative anatomy of certain genera of the cycadaceae. J. Linn. Soc. (Bot)., 33: 437.
Idem (1906). The structure and origin of the cycadaceae. Ann. Bot., 20: 129-159.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.