On the ichnofossil Treptichnus pedum: inferences from the Nagaur Sandstone, Marwar Supergroup, India

Шарма, Мукунд; Ahmad, Shamim; Pandey, SK; Kumar, Kuldeep

doi:10.3140/bull.geosci.1666

Cited by 12 publications

(6 citation statements)

References 32 publications

(58 reference statements)

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“…The total thickness of Nagaur Sandstone is ∼500 m, whereas this assemblage of trace fossils is reported from a very restrictive exposure of 18 m at Dulmera; therefore, chances of finding ichnofossils at different underlying levels in the unexposed sections cannot be ruled out. The presence of T. pedum thus, in the present context, could not be considered as FAD (Sharma et al 2018) to draw any conclusion regarding the Pc-C boundary in the Nagaur Sandstone. The onset of Stage 3 is denoted by FAD of trilobite along with SSF and micromollusk.…”

Section: Age Connotationmentioning

confidence: 65%

“…Srivastava (2012a, b) described Treptichnus pedum and priapulid worms from the Nagaur Sandstone and claimed the Pc-C boundary within the Nagaur Group. Recently, Sharma et al (2018) presented a comprehensive study of around 291 in-situ specimens of the T. pedum on its morphological attributes, palaeoecology, mode of preservation, along with statistical analysis to infer the behaviour of the burrow-maker. Reviews on the trace fossils assemblage by Sharma and Pandey (2011), Singh et al (2014) and Pandey et al (2014) suggested that trace fossil hosting rocks belong to Stage 2 of the Cambrian Period (upper part of Terreneuvian).…”

Section: Previous Studiesmentioning

confidence: 99%

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Observations on the ichnospecies Monomorphichnus multilineatus from the Nagaur Sandstone (Cambrian Series 2-Stage 4), Marwar Supergroup, India

et al. 2018

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The Ediacaran-Cambrian Marwar Supergroup exposed in the western Rajasthan, India yielded abundant sigmoidal scratches assigned to ichnospecies Monomorphichnus multilineatus from the Nagaur Sandstone belonging to the Cambrian (Series 2-Stage 4). Nagaur M. multilineatus are recorded from the intertidal regime. It is an addition to already known depositional environments for this ichnospecies, which are known from shallow marine, wave-dominated, to non-marine or brackish water and storm-dominated sequences. Classical systematics of M. multilineatus is enriched with additional information in the paper. Its significance has been discussed regarding the palaeoecology of trace producers. Comprehensive statistical analyses help reveal its behaviour and feeding pattern of the causative organism of M. multilineatus. Hierarchical Cluster Analysis (HCA), average linkage and Pearson Correlation were performed to establish the natural grouping and behaviour of the specimens. HCA indicates that the studied Nagaur specimens belong to ichnogenera Monomorphicnus and ichnospecies, i.e., multilineatus. Pearson correlation, involving thickness and length of individual specimen, was positive. It indicates that the amount of food required by individual adult specimen was more and thereby requiring more grazing to provide enough food for survival. All the known occurrences of M. multilineatus are reviewed in the present study for their mode of preservation, depositional environment, palaeoecology and taphonomy.

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Section: Age Connotationmentioning

confidence: 65%

Section: Previous Studiesmentioning

confidence: 99%

Observations on the ichnospecies Monomorphichnus multilineatus from the Nagaur Sandstone (Cambrian Series 2-Stage 4), Marwar Supergroup, India

et al. 2018

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“…The Nagaur Group in ascending order is divisible into the Nagaur Sandstone and the Tunklian Sandstone. Cambrian trace fossils representing Cruziana ichnofacies are known from the Nagaur Sandstone Pandey, 2008, 2010;Singh et al, 2014;Pandey et al, 2014;Sharma et al, 2018) together with articulated arthropod tergites (Singh et al, 2013) and serially repeated Rusophycus and intergrading Cruziana association (Chaubey and Singh, 2011). Abundant specimens of Treptichnus pedum made by priapulid like worms have been recorded from the Nagaur Sandstone (Srivastava, 2012), which are assigned to the Ediacaran-Cambrian boundary interval.…”

Section: Biozonation In the Peninsular Indiamentioning

confidence: 99%

“…The age of the Nagaur Sandstone is unresolved and the proposed ages vary from (i) early Cambrian Pandey, 2008, 2010;Singh and Chaubey, 2011;Chaubey and Singh, 2011;Singh et al, 2013), (ii) Ediacaran-Cambrian boundary interval (~541 Ma) (Srivastava, 2012) Cambrian Series 2, Stage 4 (~511 Ma) (Hughes, 2016;Sharma et al, 2018).…”

Section: Biozonation In the Peninsular Indiamentioning

confidence: 99%

“…Though several workers reported the Cambrian trace fossils, yet the precise age of the Nagaur Sandstone (within the Cambrian) remains disputed. Some workers assigned a Terreneuvian-Series 2 age, while others preferred latest part of Cambrian Series 2/ Stage 4 (see Hughes, 2016;Pandey et al, 2014;Singh et al, 2013Singh et al, , 2014Sharma et al, 2018;Singh et al, 2019a).…”

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confidence: 99%

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Cambrian of the Himalaya and the Peninsular India-Biozonation, Depositional Environments and Biogeographic Provinces

Bhargava

2020

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In the Indian Himalaya, the Cambrian sequences are exposed in the Lesser and Tethyan Himalayan zones (LHZ and THZ). In the LHZ, the Cambrian biozonation is available at four stratigraphic intervals, i.e., at ~542-535 Ma, ~524-513 Ma, ~516 Ma, and ~512 Ma. In the THZ, the Cambrian biozonation exists broadly at two stratigraphic intervals, i.e., ~514-505 Ma (in the Spiti region and partially in the Kashmir region) and ~505-498 Ma (in the Zanskar region and partially in the Kashmir region). The Indian Cambrian faunal elements share Gondwanan and peri-gondwanan affinities. The depositional environments of the Cambrian sediments of THZ and LHZ show a wide array of settings. Cambrian of the Himalaya and the Peninsular India In the Paleozoic succession of the Indian Himalaya, the Cambrian sequences, volumetrically form the most abundant rocks (Wadia, 1975; Brookfield, 1993). The Cambrian sequences occurs in two broad lithotectonic zones (i) the LHZ framed by the Main Boundary Thrust (MBT) in the south and the Main Central Thrust (MCT) in the north and, (ii) the THZ bounded by the Vaikrita Group rocks with tectonic / non-conformable contact with the Greater Himalayan Zone (GHZ) in the south and the Indus-Tsangpo Suture Zone (ITSZ) in the north. The Cambrian sequences within each zone are classified according to the structural/topographic basin in which they occur. Myrow et al. (2009) suggested that the Greater Himalayan Zone (GHZ) also includes deformed Cambrian sedimentary rocks in its central part-a contention yet to be proved. Rocks of the Cambrian age are also known from the craton of the peninsular part of the Indian plate i.e., the Bikaner-Nagaur region of the Rajasthan basin (

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The anchor-shaped Ediacaran organism Parvancorina from Marwar Supergroup, India

Parihar,

Chouhan,

Kumar

et al. 2023

J Earth Syst Sci

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On the ichnofossil Treptichnus pedum: inferences from the Nagaur Sandstone, Marwar Supergroup, India

Cited by 12 publications

References 32 publications

Observations on the ichnospecies Monomorphichnus multilineatus from the Nagaur Sandstone (Cambrian Series 2-Stage 4), Marwar Supergroup, India

Observations on the ichnospecies Monomorphichnus multilineatus from the Nagaur Sandstone (Cambrian Series 2-Stage 4), Marwar Supergroup, India

Cambrian of the Himalaya and the Peninsular India-Biozonation, Depositional Environments and Biogeographic Provinces

The anchor-shaped Ediacaran organism Parvancorina from Marwar Supergroup, India

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