Studies in the Glossopteris Flora of India - 19. Two new species of Dadoxylon from the Lower Gondwanas of India

P.K. Maithy

doi:10.54991/jop.1964.683

Authors

P.K. Maithy Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India

DOI:

https://doi.org/10.54991/jop.1964.683

Abstract

Two new species of Dadoxylon, viz. Dadoxylon gondwanense and Dadoxylon kharkhariense are described. The former is characterized by radial pitting 1-5 seriate, contiguous, alternate and subopposite; cross-field pits 2-8; medullary ray uniseriate and biseriate and 1-43 cells high. The latter wood Dadoxylon kharkhariense is characterized by the presence of pitting both on the radial and tangential wall of the tracheids, 1-3 seriate, alternate, sub-opposite and opposite; contiguous or separate, sometimes in distinct groups of 2 or 3 pits; crossfield pits 2-5 (7); medullary rays uniseriate, rarely biseriate.

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References

GRAMBAST, L. (1960). Etude d’une Dadoxylon permien du Congo belge et remarques sur las Dadoxylon permo-carboniferes des territoires a flora de Gondwana. Ann. Mus. Congo belge (Sci. geol.) 8 (30): 1-22.

HOLDEN, R. (1917). On the anatomy of two Palaeozoic stems from India. Ann. Bot. London. 31: 315-326.

KRAUSEL, R. & DOLIANITI, E. (1958). Gymnospermenholzer aus dem Palazoikum Brasiliensis. Palaeontographica 104B; 115-137.

KRAUSEL, R. & RANGE, P. (1928). Beitrage zur Kenntis der Karru-formation Deutsch – Sudwest Afrika. Beitr. Geol. Erforsch. dutsch. Schutzgeb. 20: 1-54.

MAHESHWARI, H. K. (1964). Studies in the Glossopteris Flora of India – 16. Dadoxylon jamudhiense, a new species of fossil wood from the Raniganj Stage of the Jharia Coalfield, Bihar. The Palaeobotanist 12(3): 267-269. https://doi.org/10.54991/jop.1963.663

MANIERO, J. (1946). Uma Nova Madiera Fossil do Brasil Meridonal, Dadoxylon roxoi sp. n. Rev. Inst. Adolfo. Lutz. 6: 65-76.

OLIVERA, E. (1936). Dadoxylon derbyi sp. n. Serv. Miner. Natao. Perelim. No. 1:

RAO, H. S. (1935). On a sphaerosiderite, containing a new species of Dadoxylon (D. parabeliense) from Lower Gondwana Coal Measures of India. Rec. geol. Surv. India. 59 (2): 174-183.

SAHNI, B. (1932). Dadoxylon zalesskyi, a new species of Cordaitean tree from the Lower Gondwana of India. Ibid. 56 (4): 418-429.

SURANGE, K. R. & MAITHY, P. K. (1962). Studies in the Glossopteris flora of India – 13. Barakaroxylon, a new genus of petrified woods from the Lower Gondwanas of India. The Palaeobotanist 10 (1 & 2): 108-112. https://doi.org/10.54991/jop.1961.611

Idem (1963). Studies in the Glossopteris flora of India – 14. Two new fossil woods from the Lower Gondwanas of India. The Palaeobotanist 11 (1 & 2): 96-102. https://doi.org/10.54991/jop.1962.624

SURANGE, K. R. & SAXENA, Y. N. (1959). Studies in the Glossopteris flora of India – 10. Dadoxylon barakarense sp. nov. from the Jharia Coalfield, India. The Palaeobotanist 7(1): 1-5. https://doi.org/10.54991/jop.1958.562