Oldest Asian Record of Snapping Shrimps(Malacostraca:Alpheidae)from the Kutch Basin,Western India and Associated Biota:Biostratigraphic,Paleoenvironmental and Paleoecological Significance  

作　　者：Vivesh V.KAPUR Kamlesh KUMAR Pranav J.PANDYA Amit KGHOSH Arindam CHAKRABORTY Anupam SHARMA Gaurav CHAUHAN M.G.THAKKAR 

机构地区：[1]Birbal Sahni Institute of Palaeosciences,53,University Road,Lucknow 226007,India [2]Department of Biology,Shri R.R.Lalan College,Bhuj,Kachchh District,Gujarat,India [3]Institute of Earth Sciences,Academia Sinica,Taipei,Taiwan 11529,China [4]Department of Earth and Environmental Science,K.S.K.V.Kachchh University,Bhuj,Kachchh District,Gujarat,India

出　　处：《Acta Geologica Sinica(English Edition)》2022年第6期1867-1883,共17页地质学报（英文版）

基　　金：granted by the BSIP Lucknow;India in the form of an In-house Project No. 3 (2021–2025)

摘　　要：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.The present investigation also provides the oldest fossil evidence on the co-occurrence of Alpheus and gobiids(based on otoliths)that strongly advocates that the mutualistic association between these animal groups had developed by the Aquitanian.

关 键 词：biostratigraphy Crustacea Caridea ELASMOBRANCHS GOBIIDAE invertebrate and vertebrate paleontology NANNOFOSSILS Oligocene-Miocene Indian subcontinent 

分 类 号：Q911[天文地球—古生物学与地层学]