Glottolepis rugosa gen. et sp. nov. from Triassic beds of Nidpur

Bose, M.N.; Srivastava, S.C.

doi:10.54991/jop.1969.838

Cited by 3 publications

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“…The present palynological results from the same region (Marhwas assemblage) also support this conclusion Sequel to the report of Dicroidium by Satsangi (1964) from Nidpur, continuous efforts to analyse the flora of the area have resulted in the wealthy record of cuticles, fructifications and in sitll pollen from this bed (Srivastava, 1975). Besides, reports of rich floral elements by Bose and Srivastava (1970, 1971,1972, Pant and Basu (1973, Srivastava and Maheshwari (1975), and Pant and Pant (1987) made this bed a classical example of preservation and diversification. Because of the presence of characteristic Dicroidium-rich flora wjth other pteridospermic, ginkgoalean and coniferalean groups of plants, the aSSignment of Triassic age has been supported by rhese workers for the Nidpur beds.…”

Section: Relationship Of Nidpur Bedsmentioning

confidence: 93%

Palyno-dating of Nidpur beds, Son Graben, Madhya Pradesh

Tiwari¹,

Ram-Awatar²

1989

JPS

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The Nidpur beds, located in Gopad River section near Nidpur Village, Sidhi District, Madhya Pradesh, have proved to be a treasure of plant fossils-mainly fructifications and leaf-structures. The occurrence of Dicroidium rich pteridospermic megaflora provides the basis for dating these beds as Triassic. The present study reveals that the Nidpur beds are bracketed between two faults, as a result of which they escaped the erosion. The other underlying plant beds exposed in Gopad rivers and its tributaries (Mahan River and Sehra Nala) are older than Nidpur beds as they yielded latest Permian palynoassemblages. Lithologically the Nidpur beds arc classified within the Upper Pali Member, and their palyno assemblage containing Playfordiaspora, Lundbladispora. Densoisporites, Araucariacites, Goubinispora, Klausipollenites, Lunatisporites, Trabeculosporites indicates a Triassic affiliation. The trailing striate-disaccates are the remainie of the Upper Permian flora. On the basis of mega and microfossils it is suggested that they are of the Early Triassic age.

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Section: Relationship Of Nidpur Bedsmentioning

confidence: 93%

Palyno-dating of Nidpur beds, Son Graben, Madhya Pradesh

Tiwari¹,

Ram-Awatar²

1989

JPS

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“…The fossil plants so far described include members belonging to algae, bryophytes, pteridophytes and gymnosperms. The megafossils of these beds have been described from time to time by Srivastava (1971Srivastava ( , 1974Srivastava ( , 1975Srivastava ( , 1976Srivastava ( , 1977, Bose and Srivastava (1970, 1971, 1972, Srivastava and Maheshwari (1973), Pant and Basu (1973, 1978, 1979, 1981 and Pant and Pant (1987). The present paper describes a structurally preserved detached synangiate organ frequently encountered among the carbonaceous residues extracted after HF maceration of the shales.…”

Section: Introductionmentioning

confidence: 99%

Nidianthus gen. nov. - A Caytonanthus - like pollen organ from the Triassic of Nidpur, M.P., India

Bhowmik

Parveen

2008

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Nidianthus indicus gen. et sp. nov. is a synangiate pollen organ represented by more than 30 detached specimens. The compressed synangia were isolated from the Nidpur beds by bulk maceration of the Triassic shale in HF. Each synangium is elongated, radially symmetrical, appearing four-winged with a short axial attachment at base possibly representing ultimate branchlet. The four elongated pollen sacs remain attached at the base of synangium but appearing attached or free in middle and apical regions leaving four gaps at the time of dehiscence. The apical region of each pollen sac is pointed and bent inward towards the centre of synangium. Each pollen sac dehisces by a longitudinal slit along the midline of inner face. The surface of pollen sacs shows longitudinal striations. Some specimens showed a quadrangular abscission scar at the base of synangium. Cuticle of pollen sac wall showed elongated, rectangular to polygonal cells seemingly arranged in longitudinal files. Anticlinal walls thin, obscure, straight or slightly waved. Cells become narrow towards the inner margin. Many cells of pollen sac wall showed median papilla bases and cells near the apical region showed cutinized unicellular hairs. Sometimes, remains of an inner, obscurely cellular, granular membrane possibly representing a tapetal layer could also be seen on inner side of pollen sac wall. Inside each pollen sac is a single mass of pollen-grains. Pollen-grains bisaccate, bladders hemispherical or obovate showing irregular surface reticulum, Nidianthus gen. nov. closely resembles the anther-like pollen organ Caytonanthus of Caytoniales.

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“…Granite, gneiss, quartzite, phyllite, schist and pegmatite west of Singrauli main sub-basin are the most explored and studied rocks in terms of macrofossil studies in this Coalfield (Bhowmik & Das, 2008Bhowmik & Parveen, 2008, 2009Bose & Srivastava, 1970, 1972Chandra & Maheshwari 1988;Pant & Basu, 1973, 1977, 1978, 1979Srivastava, 1969Srivastava, , 1971Srivastava, , 1974Srivastava, , 1979Srivastava, , 1988. The present paper deals with the systematic studies of glossopterid assemblage recovered from the coal bearing sequence of Purewa Bottom seam of the Barakar Formation of Bina Colliery.…”

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Macrofloral assemblage from the Early Permian Barakar Formation of Singrauli Coalfield, Son-Mahanadi Basin, India

Saxena¹,

Singh²,

Shabbar³

et al. 2016

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A well preserved macroflora belonging to early Permian (Artinskian) Lower Barakar Formation has been reported for the first time from the Bina Colliery in Singrauli Coalfield, Son–Mahanadi Basin. The floral assemblage mostly represented by leaves belong to two orders Glossopteridales and Cordaitales and three genera, namely Gangamopteris, Glossopteris and cf. Noeggerathiopsis. Many ill–preserved impressions representing scale leaves, seeds, fertile structures, branching axes/roots and stem casts have also been found in this assemblage. The macroflora is completely devoid of the groups Lycopodiales, Sphenophyllales, Filicales, Pinales, Ginkgoales, Equisetales and Cycadales. Their absence signifies that vegetated area might not be adequately cool and humid to facilitate the growth of these shade loving plants.

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Glottolepis rugosa gen. et sp. nov. from Triassic beds of Nidpur

Cited by 3 publications

References 1 publication

Palyno-dating of Nidpur beds, Son Graben, Madhya Pradesh

Palyno-dating of Nidpur beds, Son Graben, Madhya Pradesh

Nidianthus gen. nov. - A Caytonanthus - like pollen organ from the Triassic of Nidpur, M.P., India

Macrofloral assemblage from the Early Permian Barakar Formation of Singrauli Coalfield, Son-Mahanadi Basin, India

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