Early Danian lacustrine - brackish water Ostracoda from the Deccan Inter-trappean beds near Jhilmili, Chhindwara District, Madhya Pradesh, India

Abstract

Twenty lacustrine – brackish water ostracode species are described from the recently discovered early Danian Planktic Foraminiferal Zone P1a sediments in the Deccan Inter-trappean beds of Jhilmili, ChhindwaraDistrict, Madhya Pradesh, India. These include two brackish water species – Neocyprideis raoi (Jain 1978), Buntonia sp. - and 18 lacustrine species of which one species - Strandesia jhilmiliensis - is new, 15 species are assigned to previously known species, and 2 species are left in open nomenclature. The Inter-trappean beds in the central Deccan volcanic province of India were previously mostly considered as Maastrichtian in age but at Jhilmili, on the basis of associated planktic foraminifera, their deposition clearly persisted into early Danian time.

A freshwater ostracod assemblage from the Kesavi intertrappean beds (latest Cretaceous/earliest Paleocene) of lower Narmada Valley, Malwa Sub-province of Deccan Traps, Dhar District, Madhya Pradesh, India

“…So far, this species has been reported from various intertrappean sites in Gitti Khadan (Bhatia & Rana, 1984); Chandarki and Yanagundi, Gulbarga District (Whatley et al, 2002a); Mamoni (Whatley et al, 2003a); Mohgaon-Haveli and Takli (Khosla & Nagori, 2007; Khosla et al, 2007); Jhilmili (Khosla et al, 2009a, 2011a); Khar (Rathore et al, 2017); Manawar (Kapur et al, 2019) and recently reported from Gujri (Kshetrimayum et al, 2021). It is also described from the infratrappean bed (Lameta Group) of Dongargaon (Khosla et al, 2005) and Pisdura hill section (Khosla et al, 2011b).…”

“…The species name was retained as L. deccanensis (Khosla et al, 2005; Khosla et al, 2007) for the last name L. Bhatiai . The species has been described from the intertrappean bed of Mohagaon-Haveli and Jhilmili, Chhindwara District (Khosla & Nagori, 2007; Sharma & Khosla, 2009); Takli, Nagpur (Khosla et al, 2007); and the Lameta formation of Pisdura hill station, Nand-Dongargaon basin (Khosla et al, 2010, 2011b).…”

“…Remarks : This ostracod species of Cypria has been reported from the intertrappean sections of the Kachchh District of Lakshmipur (Whatley & Bajpai, 2000a); Kora (Bajpai & Whatley, 2001); Anjar (Khosla & Nagori, 2005); Chhindwara District of Mohgaonkala (Whatley et al, 2002b), Mohgaon-Haveli (Khosla et al, 2007); Jhilmili (Khosla et al, 2009a, 2011a; Sharma & Khosla, 2009); Yanagundi and Chandarki in Gulbarga District (Whatley et al, 2002a); Papro in Lalitpur District (Sharma et al, 2008); and infratrappean (Lameta Group) of Dongargaon in Chandpura District (Khosla et al, 2005, 2011b), Pisdura (Khosla et al, 2010, 2011b).…”

“…Then Khosla et al (2009b) restudied the Lakshmipur intertrappean bed assigned a new name, Stenocypris cylindrical , based on the specimen’s outline shape and internal features. Apart from this, this species has been described from the intertrappean bed of Kora and Anjar, Kachchh District, Gujrat (Bajpai & Whatley, 2001; Khosla & Nagori, 2005); Chandarki and Yanagundi (Whatley et al, 2002a); Mamoni (Whatley et al, 2003a); Takli (Khosla & Nagori, 2007); Phulsagar (Bajpai et al, 2004); Papro (Sharma et al, 2008); Jhilmili (Khosla et al, 2009a, 2011a; Sharma & Khosla, 2009); Khar (Rathore et al, 2017), Gujri (Kapur et al, 2019); Kshetrimayum et al, 2021); and infratrappean section (Lameta Formation) of Pisdura (Khosla et al, 2010, 2011b) and Chhui hill and Bara Simla hill sections (Khosla et al, 2011b).…”

“…Remarks : This species has been widely recorded from the intertrappean beds of Lakshmipur (Whatley & Bajpai, 2000a), Kora (Bajpai & Whatley, 2001); Anjar (Khosla & Nagori, 2005), Kachchh District; Yanagundi, Gulbarga District (Whatley et al, 2002a); Mamoni, Kota District (Whatley et al, 2003a); Takli, Nagpur (Khosla & Nagori, 2007); Papro, Lalitpur (Sharma et al, 2008); Jhilmili, Chhindwara District (Khosla et al, 2009a, 2011a; Sharma & Khosla, 2009); and the Lameta Group of Dongargaon (Khosla et al, 2005, 2011b); Pisdura hill section (Khosla et al, 2010, 2011b), Nand-Dongargaon basin and Chui hill section (Khosla et al, 2011b), Jabalpur basin.…”