On Sporogonites Halle: A morphologic, taxonomic and phylogenetic appraisal

Authors

  • D.C. Bharadwaj Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India

DOI:

https://doi.org/10.54991/jop.1981.1396

Keywords:

Bryophyte, Sporogonites, Morphology, Taxonomy, Phylogeny, Lower Devonian

Abstract

All the information regarding Sporogonites Halle, available from descriptions and illustrations by various authors has been analyzed, evaluated, and synthesized to arrive at a composite picture of the plant. It has been concluded that Sporogonites is the earliest known bryophyte which had a hygrophyllous, liverwort-like, gametophytic (?) thallus bearing a large number of sporophytic (?) stalks (setae) terminating into obovoid or clavate capsules with an upper, continuous, spore-containing part and a lower, sterile, photosynthetic portion. The structure and organization of the capsule combine features of the two primitive subclasses of Musci but without columella. The presence of lignified vascular tissue in the stalk or the thallus has not been substantiated. An emended diagnosis and a reconstruction based upon the synthesized information have been given for the genus.

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References

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Halle TG 1916a. A fossil sporogonium from the Lower Devonian of Röragen in Norway. Bot. Nat.,: 79-81.

Halle TG 1916b. Lower Devonian plants from Röragen in Norway. K. svenska Vetensk-Akad. Handl., 57: 1-46.

Halle TG 1936. Notes on the Devonian genus Sporogonites. Sv. Bot. Tidskr., 30: 613-23.

Lang WH 1937. A specimen of Sporogonites from the "Gres de Wépion". Bull. Mus. R. Hist. Nat. Belgique, 13: 1-7.

Lang WH & Cookson IC 1930. Some fossil plants of early Devonian type from the Walhalla Series, Victoria, Australia. Phil. Trans. R. Soc. Lond., B219.

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Published

1981-12-31

How to Cite

Bharadwaj, D. (1981). On Sporogonites Halle: A morphologic, taxonomic and phylogenetic appraisal. Journal of Palaeosciences, 28, 26–35. https://doi.org/10.54991/jop.1981.1396

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Research Articles

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