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

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 (Aquita...

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Bibliographic Details
Published in:Acta geologica Sinica (Beijing) 2022-12, Vol.96 (6), p.1867-1883
Main Authors: KAPUR, Vivesh V., KUMAR, Kamlesh, PANDYA, Pranav J., GHOSH, Amit K., CHAKRABORTY, Arindam, SHARMA, Anupam, CHAUHAN, Gaurav, THAKKAR, M. G.
Format: Article
Language:English
Subjects:
Alpheidae
Analytical methods
biostratigraphy
Biota
Caridea
Chemical analysis
Crustacea
Elasmobranchs
Fish
Fluorescence
Fluorescence in situ hybridization
Fossils
Gobiidae
Indian subcontinent
invertebrate and vertebrate paleontology
Marine crustaceans
Marine fishes
Miocene
nannofossils
Oligocene–Miocene
Otoliths
Paleoecology
Sharks
Shrimps
Spectroscopy
Spines
Teeth
Wavelength
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Summary: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.
ISSN:1000-9515
1755-6724
DOI:10.1111/1755-6724.14951