Oldest Asian Record of Snapping Shrimps (Malacostraca: Alpheidae) from the Kutch Basin, Western India and Associated Biota: Biostratigraphic, Paleoenvironmental and Paleoecological Significance
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Oldest Asian Record of Snapping Shrimps (Malacostraca: Alpheidae) from the Kutch Basin, Western India and Associated Biota: Biostratigraphic, Paleoenvironmental and Paleoecological Significance
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This work is granted by the BSIP Lucknow, India in the form of an In-house Project No. 3 (2021–2025). The authors would like to thank the Director (BSIP) for providing the necessary infrastructure and permission(s) to publish the present investigation. AC is indebted to the authorities of BSIP for a Birbal Sahni Research Associateship. Technical support provided by Subodh Kumar (FESEM facility, BSIP) and Amritpal Singh Chaddha (Geochemistry Laboratory, BSIP) during SEM, EDS, and XRD analyses is thankfully acknowledged. Abhishek R. Lakhote (Dept of Earth and Environmental Science, KSKV Kachchh University, India) is acknowledged for his help during constructing one illustration. VVK acknowledges Matú? Hy?ny (Dept of Geology and Palaeontology, Comenius University, Bratislava, Slovakia) for his input on earlier version(s) of the manuscript and Moriaki Yasuhara (School of Biological Sciences and Swire Institute of Marine Science.

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    Abstract:

    The oldest Asian record of alpheid shrimps, assigned to genus Alpheus, based on snapping claw fingertips from the Miocene Khari Nadi Formation in the Kutch Basin, western India reported herein, extends the fossil record of the family Alpheidae from Asia by ~22 million years. An early Miocene (Aquitanian) age is estimated based on the associated assemblage of calcareous nannofossils, Sphenolithus disbelemnos, Cyclicargolithus floridanus, and Reticulofenestra haqii. The co-occurring microbiota includes bony fish otolith remains, identified as “genus Gobiidarum”, isolated teeth of Dasyatis rays, Sphyrna sharks, and teleosts, ctenoid and placoid scales, ostracods, belonging to the genera Paractinocythereis, Alocopocythere, Ruggieria? Aglaiocypris, Bairdoppilata, and echinoid spines. Taken together, the microfossil assemblage and data from chemical analyses using Energy Dispersive Spectroscopy, X-Ray Diffraction and Wavelength Dispersive X-Ray Fluorescence of host and associated lithologies suggests prevalence of a shallow (neritic) to coastal marine (intertidal) depositional paleoenvironment.

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Vivesh V. KAPUR, Kamlesh KUMAR, Pranav J. PANDYA, Amit K. GHOSH, Arindam CHAKRABORTY, Anupam SHARMA, Gaurav CHAUHAN, M. G. THAKKAR.2022. Oldest Asian Record of Snapping Shrimps (Malacostraca: Alpheidae) from the Kutch Basin, Western India and Associated Biota: Biostratigraphic, Paleoenvironmental and Paleoecological Significance[J]. ACTA GEOLOGICA SINICA(English edition),96(6):1867~1883

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  • 收稿日期:2022-02-10
  • 最后修改日期:2022-04-14
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  • 在线发布日期: 2022-12-28
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