Abstract
About 30 star-shaped resting traces of ophiuroids Asteriacites lumbricalis have been recorded and described herein from the Thaiat Member (early Jurassic - Bajocian) of Lathi Formation, Jaisalmer Basin, western India. This is the first report of Asteriacites lumbricalis traces from the Lathi Formation of the Jaisalmer basin. The studied material occurr as star-shaped traces with five long and slender arms/rays structured morphology in yellowish to pinkish brown fine-grained silty-sandstone. The traces of A. lumbricalis show both positive and negative epirelief preservations in Thaiat Member of Lathi Formation. Here the recorded A. lumbricalis traces are found in size ranges of 2 cm–5 cm (measured dimensions from arm tip to arm tip) indicating its larger forms. The presence of overlapped arms/rays printing traces of A. lumbricalis in Thaiat Member of Lathi Formation has shown horizontal movement of ophiuroids in searching for resting and hiding areas.
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Parihar, V.S., Meghwal, V.K. & Singh, A. The Star-shaped Resting Traces Asteriacites lumbricalis from Thaiat Member (Early Jurassic - Bajocian) of Lathi Formation of the Jaisalmer Basin, Western India. J Geol Soc India 99, 61–64 (2023). https://doi.org/10.1007/s12594-023-2267-3
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DOI: https://doi.org/10.1007/s12594-023-2267-3