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

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    • Keywords

       

      Monomorphichnus multilineatus; Kodymirus; Nagaur Sandstone; Marwar Supergroup; India

    • Abstract

       

      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 be 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.

    • Author Affiliations

       

      Mukund Sharma1 2 S K Pandey1 S Ahmad1 K Kumar3 A H Ansari1

      1. Birbal Sahni Institute of Palaeosciences, 53 University Road, Lucknow 226 007, India
      2. Present address: Department of Geology, Banaras Hindu University, Varanasi 221 005, India
      3. Bond Business School, Bond University, Gold Coast, Queensland 4229, Australia
    • Dates

       
  • Journal of Earth System Science | News

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