Permian megaspores from Kuraloi Area, Ib-River coalfield, Mahanadi Basin, Orissa

A rich assemblage of palynomorphs including miospores and megaspores has been recorded from the bore core no. IBKAN-2 drilled at a depth of 17.80m in Kuraloi Block-A, south-west part of the Ib-River Coalfield, Jharsuguda district, Odisha. The miofloral assemblage recovered shows prominence of cingulate, zonate, taeniate, non-striate and non saccate palynotaxa which indicate an early Triassic age and is comparable with the palynoassemblages of the same age known from the Damodar basin, India. The megaspore assemblage includes eight genera and fifteen species namely, Banksisporites karanpuraensis, B. indicus, B. utkalensis, Banksisporites sp., Barakarella pantii, Barakarella sp., Biharisporites spinosus, Biharisporites sp., Erlansonisporites triassicus, Erlansonisporites cf. erlansonii, Erlansonisporites sp. Jhariatriletes sp., Singhisporites sp., Ramispinatispora sp. and Talchirella trivedii. Records of megaspores are sparse in the early Triassic of Gondwana basins of India. The present study records the first occurrence of miospores and megaspores from the early Triassic of Mahanadi basin besides substantiating the earlier data.

show abstract

Megaspore Biharisporites Potonié from the Triassic of Nidpur, Madhya Pradesh, India: A New Report

Das

Bhowmik

Parveen

2021

Journal of the Geological Society of India

View full text Add to dashboard Cite

The article reports a dispersed megaspore morphotaxon, Biharisporites Potonié for the first time from the Nidpur beds, Madhya Pradesh, India. The megaspores are structurally preserved compressions and reveal the presence of lycopsids in the parent flora, though macrofossil evidence of such plants is almost lacking. The diagnosis of Biharisporites is emended, to include all externally similar cavate spore types, irrespective of whether their inner sac/ nexine/inner body/mesosporium/inner exospore, is pitted/cushioned or unpitted. The megaspores assigned to the genus are represented by two new species, viz., Biharisporites gopalii sp. nov. and B. bosei sp. nov. They are rare, non-lageniculate, trilete megaspores having spinae or coni on both proximal and distal surfaces. Though the early Triassic has traditionally been interpreted as semi-arid, the recovery of carbonaceous debris from the non-coal bearing Nidpur beds suggests a favourable climate for vegetation in the middle Triassic (Anisian-Ladinian) at the time of deposition of plant debris.

show abstract

Permian megaspores from Kuraloi Area, Ib-River coalfield, Mahanadi Basin, Orissa

Cited by 14 publications

References 3 publications

Reappraisal of Permian and Early Triassic Palynoflora and Palynostratigraphy of Son-Mahanadi Basin and Their Climatic Implications

Reappraisal of Permian and Early Triassic Palynoflora and Palynostratigraphy of Son-Mahanadi Basin and Their Climatic Implications

Early Triassic Palynomorphs from Kuraloi Block, Belphar Area, Ib-River Coalfield, Mahanadi Basin, Odisha

Megaspore Biharisporites Potonié from the Triassic of Nidpur, Madhya Pradesh, India: A New Report

Contact Info

Product

Resources

About