Browsing by Author "Wazir, Wasim Abass"

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    First report on late Miocene (Tortonian: ~ 11�10�Ma) charophyte gyrogonites from Tapar, Kachchh District, Gujarat State, western India
    (Springer Nature, 2022-09-05T00:00:00) Singh, Nongmaithem Amardas; Singh, Ningthoujam Premjit; Sharma, K. Milankumar; Patnaik, Rajeev; Tiwari, R.P.; Sehgal, Ramesh Kumar; Kumar, Vinay; Wazir, Wasim Abass; Singh, Y. Priyananda; Choudhary, Deepak
    This paper describes the first record of charophyte gyrogonites from the late Miocene (Tortonian; ~ 11�10�Ma) Tapar locality of Kachchh, Gujarat State, western India. The recovered charophyte assemblage is constituted by Chara globularis var. aspera, C. globularis var. globularis, Lychnothamnus cf. sahnii, Lychnothamnus sp. and Nitellopsis sp. In addition, the present article discusses the palaeoenvironment based on the recorded charophyte gyrogonites (this study) and previously known faunal data (mainly vertebrates) from the Tapar locality, Kutch Basin, western India. Further, considering the significant extension of the biostratigraphic range [especially the First Appearance Datum (FAD)] of fauna from the Kutch Basin (in particular from the Tapar locality), we herein make an attempt to compare biostratigraphically the faunal assemblages from Kutch with those from the Siwalik Group, north India. � 2022, Indian National Science Academy.
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    New rodents shed light on the age and ecology of late Miocene ape locality of Tapar (Gujarat, India)
    (Taylor and Francis Ltd., 2022-08-05T00:00:00) Patnaik, Rajeev; Singh, Ningthoujam Premjit; Sharma, K. Milankumar; Singh, Nongmaithem Amardas; Choudhary, Deepak; Singh, Y. Priyananda; Kumar, Rohit; Wazir, Wasim Abass; Sahni, Ashok
    The Miocene ape (Sivapithecus) locality of Tapar in Kutch (Gujarat, India) has yielded a diverse rodent assemblage that includes: a new murine Progonomys prasadi sp. nov., a new gerbilline Myocricetodon gujaratensis sp. nov., a new rhizomyne Kanisamys kutchensis sp. nov. and a new sciurine Tamias gilaharee sp. nov., beside additional remains of Progonomys morganae, Dakkamys asiaticus, Prokanisamys sp., Sayimys sivalensis and Democricetodon fejfari. Morphometric and PAUP based phylogenetic analyses place Progonomys prasadi sp. nov. within the Progonomys lineage. The cladogram obtained for the Siwalik murines suggest that Progonomys was ancestral to all the modern and one extinct murine genera recovered from the Siwaliks. The advanced features of Myocricetodon gujaratensis sp. nov. indicate that it was an immigrant to the subcontinent in the late Miocene. The cladistic analysis performed on Kanisamys kutchensis sp. nov. shows that it shared several advanced characters with contemporaneous Kanisamys nagrii and Kanisamys sivalensis. Based on the biostratigraphical ranges of Siwalik rodents and the co-occurrence of advanced forms of new and already reported murines, a new gerbilline and a new sciurine, we propose an age of ?10 Ma to the primate-bearing Tapar locality. Already reported stable isotope data on murines, and ecological preferences of modern counterparts of the fossil rodents and associated sharks and rays from Tapar locality, indicate that the Miocene ape Sivapithecus may have lived in a subtropical monsoonal forest close to the coast, very different from the present day arid conditions. http://zoobank.org/urn:lsid:zoobank.org:pub:12CE1B44-22A0-450F-9588-6C7F25242771. � The Trustees of the Natural History Museum, London 2022. All rights reserved.