Further observations on pentoxylon sahani Srivastava from the Jurassic of Amarjola in the Rajmahal hills

Authors

  • B.D. Sharma Department of Botany, University of Jodhpur, India

DOI:

https://doi.org/10.54991/jop.1971.899

Abstract

Anatomy of thick as well as thin stems of Penloxylon sahnii is described. In the former vascular bundles are concentric while in the latter they are sharply endocentric. Leaf traces originate from the centrifugal xylem of the main bundles and a number of them supply a leaf base. In the light of recent discoveries, relationship of Penloxylon with allied fossil woods is also discussed.

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References

Archangelsky S & Brett DW 1961. Studies on Triassic fossil plants from Argentina. 1. Rhexoxylon from Ischigualasto Formation. Phil. Trans. R. Soc. London. B. 244 (706): 1-10.

Delevoryas T 1955. The Medulloseae, their structure and relationships. Palaeontographica Abt. B 97 (3-6): 114-167.

Mittre V 1957. Studies on the fossil flora of Nipania (Rajmahal Series), India. Pentoxyleae. The Palaeobotanist 6 (1): 29-46.

Sahni B 1948. The pentoxylae, a new group of Jurassic Gymnosperms from the Rajmahal Hills, India. Bot. Gaz. 110 (1): 47-80.

Sharma BD 1969. Guptioxylon amarjolense Gen. et. Sp. nov. from Amarjola in the Rajmahal Hills, India. Palaeontographica. B. 126 (4-6): 145-153.

Sharma BD 1969a. On Pentoxyleae remains from Amarjola in the Rajmahal Hills, India. Amerghiniana. 6 (1): 50-56.

Sharma BD 1972. Guptioxylon endo centric asp. Nv. From the Jurassic of Amarjola in the Rajmahal Hills, India. Bull. Soc. Linn. Lyon. 41 (6): 114-120.

Srivastava BP 1935. On some silicified plant remains from the Rajmahal Series of India. Proc. 22nd Indian Sci. Cong. Calcutta. P. 285.

Stewart WN & Delevoryas T 1956. Medal losan pteridosperms. Bot. Rev. 22: 45-80.

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Published

1971-12-31

How to Cite

Sharma, B. (1971). Further observations on pentoxylon sahani Srivastava from the Jurassic of Amarjola in the Rajmahal hills. Journal of Palaeosciences, 20(1-3), 216–220. https://doi.org/10.54991/jop.1971.899

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Research Articles

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