Plant fossil assemblage from the talchir  formation, Auranga coalfield, Bihar, India

Tewari, Rajni; Srivastava, A.K.

doi:10.54991/jop.2000.129

Cited by 5 publications

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References 9 publications

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“…Very poor representation of the genus Glossopteris in the Talchir Formation of Talcher Coalfield may be related to its association with one of the two lower floral zones of the Talchir Formation which is dominated by Gangamopteris leaves instead of the upper floral zone that has distinct presence of Glossopteris along with Gangamopteris . Rikba beds of North Karanpura Coalfield (Lele, 1966) containing many Glossopteris species and the Talchir Formation of the Auranga Coalfield having six species of Glossopteris and seven species of Gangamopteris (Tewari & Srivastava, 2000) fits into the hypotheses of . Similarly, the presence of four species of Gangamopteris and a single Glossopteris species in the Talchir needle shale in Talcher Basin again points out that these beds belong to the lower floral zone.…”

Section: Discussionmentioning

confidence: 78%

“…G. communis and G. indica are known from the North Karanpura Coalfield (Chandra & Surange, 1979). Recently, Tewari and Srivastava (2000) reported six species of Glossopteris, viz. G. talchirensis, G indica, G. communis, G. stenoneura, G. tenuifolia and G. spatulata from the Talchir Formation exposed in Jaitri River section near Latehar Town, Auranga Coalfield, Jharkhand State.…”

Section: Talchir Formation (Early Permian Asselian-sakmarian)mentioning

confidence: 99%

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Advent and decline of the genus Glossopteris Brongniart in the Talcher Coalfield, Mahanadi Basin, Odisha, India

Saxena¹,

Singh²,

Goswami³

2014

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The paper deals with the distribution of the genus Glossopteris and its fructifications in different Lower Gondwana formations of Talcher Coalfield of Odisha State. We demonstrate how this taxon appeared in this basin in the earliest Permian Talchir Formation and evolved and diversified through the Karharbari, Barakar, Barren Measures and lower part of Kamthi formations and ultimately vanished in the early Triassic in the upper part of Kamthi Formation. Amongst fifty-one species of the genus Glossopteris recorded in all, one species each has been found in the Talchir and upper part of Kamthi formations and two, sixteen and forty-seven species respectively are represented in Karharbari, Barakar and the lower part of Kamthi formations. Barren Measures Formation is devoid of any megaplant fossil. Similarly, out of twenty-seven taxa of fertile organs belonging to the Glossopteris, two each are found in the Talchir and Barakar formations respectively, whereas twenty-four are recorded from the lower part of Kamthi Formation. It is observed that Glossopteris is less diversified in Early Permian Karharbari Formation. However, it diversified and proliferated during Barakar and Late Permian lower part of Kamthi formations. Further, it shows declination in the Early Triassic upper part of Kamthi Formation. The study shows that the lower part of Kamthi Formation of Talcher Coalfield has the maximum diversity of Glossopteris (forty-seven species) among all the known localities of this formation exposed in Indian Gondwana. The existence of meagre Glossopteris species against many Gangamopteris species in the needle shale confirms its association with the lower floral zone of Talchir Formation instead of the upper floral zone established by previous workers in this basin. Very low diversity of Glossopteris in the upper part of Kamthi Formation of Talcher Basin demonstrates that this palaeogeographic area would have experienced more arid conditions in early–middle Triassic period as compared to the mellowing climatic conditions prevailing during the same time period in the Panchet Formation (=Upper Kamthi Formation) of other areas of Son–Mahanadi Basin and the Damodar Basin.

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Section: Discussionmentioning

confidence: 78%

Section: Talchir Formation (Early Permian Asselian-sakmarian)mentioning

confidence: 99%

Advent and decline of the genus Glossopteris Brongniart in the Talcher Coalfield, Mahanadi Basin, Odisha, India

Saxena¹,

Singh²,

Goswami³

2014

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“…The occurrence of the genera Rubidgea, Euryphyllum, Noeggerathiopsis, Cordaites and Gangamopteris along with the genus Glossopteris is indicative of the presence of Karharbari sediments (Early Permian) in the lower part of the Gangamopteris occurs as the dominant megafloral component of the Glossopteris flora which is well recorded from all the Gondwanan countries, viz. India, Australia, South Africa, Congo, Brazil, Argentina, Rhodesia, Madagascar and Antarctica from the homotaxial sediments deposited during Early Permian Feistmantel, 1876Feistmantel, , 1879Feistmantel, , 1881Feistmantel, , 1890Seward, 1905;White, 1908;Zalessky, 1912;Dolianiti, 1954;Srivastava, 1956;Archangelsky, 1958Archangelsky, , 1984Plumstead, 1962;Maithy, 1965dMaithy, , 1966Rigby, 1967;Maheshwari & Prakash, 1965;Pant & Singh, 1968;Kulkarni, 1971;Chandra & Srivastava, 1982;Anderson & Anderson, 1985;Bajpai, 1990;Srivastava, 1977Srivastava &Tewari, 1996;Singh, 2000;Tewari & Srivastava, 2000;Singh et al, 2005Singh et al, , 2006aSrivastava & Agnihotri, 2010;Tewari et al, 2012;Srivastava et al, in press). The genus is distributed horizontally in almost all the geographical areas pertaining to the erstwhile Gondwana but its vertical range is somewhat restricted making it a significant genus stratigraphically.…”

Section: Introductionmentioning

confidence: 99%

Palaeobiodiversity of the Lower Gondwana rocks in the Korba Coalfield, Chhattisgarh, India and observations on the genus Gangamopteris McCoy

Singh¹,

Saxena²,

Goswami

2012

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The Korba Coalfield occupies the south-central part of Son-Mahanadi Master basin and is situated in the Korba and Bilaspur districts of Chhattisgarh State. With five open cast mines (Gevra, Dipika, Manikpur, Kusmunda and Laxman) spreading over 530 sq. kms, this coalfield is the biggest coal producing unit in India, however it was never explored for megafloral studies. Extensive investigations were recently conducted in this coalfield to discover the fossiliferous beds in the Lower Gondwana deposits and as a result a large number of plant fossils were recovered from these collieries and their extension sites belonging to the Barakar Formation. The complete flora includes 38 taxa, representing 13 genera of the orders Equisetales, Cordaitales and Glossopteridales. The order Glossopteridales is highly diversified with 34 taxa and the genus Glossopteris with 22 species dominates the flora followed by the genera Vertebraria, Sakoarota (equisetalean stems), Cordaites, Dictyopteridium, scale leaves of fertile organs, Gangamopteris, Noeggerathiopsis, Euryphyllum and Rubidgea. This is the first ever collection and record of any mega plant fossil from this coalfield. The groups Lycopodiales, Sphenophyllales, Filicales, Ginkgoales, Cycadales and Coniferales are completely absent in this area which shows that the area might not be adequately cool and humid to facilitate the growth of these shade loving under-story plants. The genus Cordaites, which is a northern hemisphere taxon has been reported along with Glossopteris floral elements. An equisetalean genus Sakoarota, described from Madagascar has been reported for the first time from the Indian Gondwana. The genus Gangamopteris comprising six species, viz. G. cyclopteroides, G. cyclopteroides var. subauriculata, G. angustifolia, G. rajaensis, G. clarkeana and Gangamopteris sp. has been systematically described and discussed in this paper. The occurrence of Rubidgea, Euryphyllum, Noeggerathiopsis, Cordaites and Gangamopteris along with Glossopteris is indicative of the presence of Karharbari sediments (Early Permian=Lower Artinskian) in the lower part of the Barakar Formation exposed in the Gevra and Dipika collieries. The recovered plant assemblage indicates an Early Permian age, Lower Artinskian (Early Barakar) in the case of the Gevra and Dipika collieries and Upper Artinskian (Late Barakar) for the Manikpur, Kusmunda and Laxman collieries.

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“…G LOSSOPTERIS stenoneura Feistmantel 1877 has been reported by various workers from different Gondwana basins of India, viz. Damodar-Koel, Wardha-Godavari, Son-Mahanadi and Satpura (Lakhanpal et al, 1976;Chandra & Singh, 1992;Chandra & Surange, 1979;Chandra & Tewari, 1991;Singh et al, 2006;Srivastava & Agnihotri, 2010;Tewari, 2007Tewari, , 2008Tewari & Jha, 2006;Tewari & Rajanikanth, 2001;, 2000a. However, the study of leaf morphology in relation with the cuticular features has not been examined so far.…”

Section: Introductionmentioning

confidence: 99%

Morpho-cuticular study of Glossopteris stenoneura Feistmantel from the Barakar Formation of Raniganj Coalfield, West Bengal

Srivastava¹,

Tewari²,

Agnihotri³

2010

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The morphological and cuticular features of well-preserved leaves of Glossopteris stenoneura Feistmantel collected from Barakar Formation of Churulia area, Raniganj Coalfield are analyzed. The study indicates that spathulate shaped leaves are distinct in having narrow-elongate trapezoidal meshes near the midrib and short, narrow meshes near the margin of leaves. Cuticle is amphistomatic, the surface of upper cuticle characteristically shows fine striations over the vein area. Stomata are anomocytic, ovalelongate with cutinized guard cells. Subsidiary cells of lower cuticle demonstrate papillae overhanging stomata.

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Plant fossil assemblage from the talchir formation, Auranga coalfield, Bihar, India

Cited by 5 publications

References 9 publications

Advent and decline of the genus Glossopteris Brongniart in the Talcher Coalfield, Mahanadi Basin, Odisha, India

Advent and decline of the genus Glossopteris Brongniart in the Talcher Coalfield, Mahanadi Basin, Odisha, India

Palaeobiodiversity of the Lower Gondwana rocks in the Korba Coalfield, Chhattisgarh, India and observations on the genus Gangamopteris McCoy

Morpho-cuticular study of Glossopteris stenoneura Feistmantel from the Barakar Formation of Raniganj Coalfield, West Bengal

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