Middle Triassic vertebrates of India

Bandyopadhyay, Sanghamitra; Sengupta, Dhurjati P.

doi:10.1016/s0899-5362(99)00093-7

Cited by 49 publications

(53 citation statements)

References 5 publications

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“…However, as these fines are intimately associated with the fluvial channel-sandstone bodies (at places even the topsets of the stratification of in-channel macroforms of elements II and III pass vertically and laterally into finegrained clastics), they are interpreted as suspension deposits in overbank areas. The virtual absence of any wave-generated features both in the fines and in the associated sandstone bodies and the presence of thick paleosol profiles and terrestrial fossil remains lend credence to this interpretation (see also Bandyopadhyay and Sengupta, 1999;Maulik et al, 2000). The stable isotopic composition of the pedogenic carbonates of these intervals also suggests deposition under a terrestrial environment (cf.…”

Section: Discussionmentioning

confidence: 84%

“…While the Pachmarhi Formation is unfossiliferous, the Denwa Formation is replete with vertebrate fossils. On the basis of faunal content, an Early Middle Triassic age has been assigned to the Denwa Formation (Bandyopadhyay and Sengupta, 1999). Based on contrasting lithofacies, sand/mud ratio, meso-and macroscale architectural element.…”

Section: Geological Backgroundmentioning

confidence: 99%

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Sedimentology of a muddy alluvial deposit: Triassic Denwa Formation, India

Ghosh

Sarkar

Maulik

2006

Sedimentary Geology

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Section: Discussionmentioning

confidence: 84%

Section: Geological Backgroundmentioning

confidence: 99%

Sedimentology of a muddy alluvial deposit: Triassic Denwa Formation, India

Ghosh

Sarkar

Maulik

2006

Sedimentary Geology

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“…Veevers & Tewari 16 assigned a Middle Triassic (Anisian to early Ladinian) age to the Denwa Formation on the basis of its vertebrate assemblage, but without giving further details. Bandyopadhyay & Sengupta 17 proposed an early Anisian age to the upper part of the Denwa Formation based on its brachyopid temnospondyl assemblage and also suggested a late Spathian to earliest Anisian age for the lower part of the unit. Abdala et al .…”

Section: Resultsmentioning

confidence: 99%

A new horned and long-necked herbivorous stem-archosaur from the Middle Triassic of India

Sengupta

Ezcurra

Bandyopadhyay

2017

Sci Rep

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The early evolution of archosauromorphs (bird- and crocodile-line archosaurs and stem-archosaurs) represents an important case of adaptive radiation that occurred in the aftermath of the Permo-Triassic mass extinction. Here we enrich the early archosauromorph record with the description of a moderately large (3–4 m in total length), herbivorous new allokotosaurian, Shringasaurus indicus, from the early Middle Triassic of India. The most striking feature of Shringasaurus indicus is the presence of a pair of large supraorbital horns that resemble those of some ceratopsid dinosaurs. The presence of horns in the new species is dimorphic and, as occurs in horned extant bovid mammals, these structures were probably sexually selected and used as weapons in intraspecific combats. The relatively large size and unusual anatomy of Shringasaurus indicus broadens the morphological diversity of Early–Middle Triassic tetrapods and complements the understanding of the evolutionary mechanisms involved in the early archosauromorph diversification.

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“…The beginning of Triassic witness the arrival of new set of mioflora forms like Densisporites, Lundbladispora, Playfordiaspora, Lunatisporites, Klausipollenites, Alisporites and Falcisporites which is followed by non taeniate dissacates . The fossil assemblage of Panchet, Tiki, Denwa and Maleri Formation (excluding Dharmaram Member) indicate that the sedimentation in all the basins stopped by Early Norian (Chatterjee and Roychowdhury, 1974;Kutty et al 1987;Kutty and Sengupta, 1989;Bandopadhyay, 1999;Bandopadhyay and Sengupta, 1999).…”

Section: Time Slot IV P-t Boundary To Early Norian (251-~210 Ma)mentioning

confidence: 92%

Stratigraphic correlation between different Gondwana Basins of India

et al. 2010

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Gondwana Basins of India occur within the suture zones of Precambrian cratonic blocks of Peninsular India along some linear belts. More than 99% of the total coal resource of the country is present within these basins. The basins are demarcated by boundary faults having graben or half-graben geometry.These basins preserve a thick sedimentary pile deposited over nearly 200 million years from latest Carboniferous to Lower Cretaceous. However, due to lack of well-constrained data, age of most of the formations is assigned tentatively. This has resulted in diversified views on both intra-and inter-basinal stratigraphic correlation particularly in case of Upper Gondwana formations.It is well recognised that there are distinct spatial and temporal similarities in lithological, faunal and floral distribution in different Gondwana Basins of southern continents, including India, that were once part of supercontinent Gondwanaland.To address the problems of Indian Gondwana stratigraphy, during the present study, some unique events, also recognised in other parts of Gondwanaland, like marine flooding surfaces, large scale tectonic events or major change in depositional environment have been used as a tool for temporal correlation within the Gondwana Basins of India. Many of these events have been dated from different basins elsewhere. Considering these major events as time planes the total time span of deposition in Gondwana Basins has been classified into seven time slots. Recognition of these time planes helps in interbasinal correlation of different formations in Indian Gondwana basins and assigning the age, wherever available. This approach also helps in better understanding of basinal history. Unless otherwise mentioned, the time scale proposed by International Commission on Stratigraphy (2004) has been followed in this paper.

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Middle Triassic vertebrates of India

Cited by 49 publications

References 5 publications

Sedimentology of a muddy alluvial deposit: Triassic Denwa Formation, India

Sedimentology of a muddy alluvial deposit: Triassic Denwa Formation, India

A new horned and long-necked herbivorous stem-archosaur from the Middle Triassic of India

Stratigraphic correlation between different Gondwana Basins of India

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