H.K. Maheshwari's scientific contributions
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Publications (17)
In this communication, results of palynological examination of some more samples of Stanleyville and Loia groups are reported. The Stanleyville samples are dominated by the Classopollis pollen. The palynologically productive range of the Loia Group in Samba bore-hole is now extended up to 682.42 m where Equisetosporites pollen predominate.
Plant fossils have been recovered from the Gangapur Formation, originally known as ‘Gangapur beds’ of the Kota ‘Stage’. The material was obtained from 11 localities in the vicinity of Gangapur Village, Adilabad District, Andhra Pradesh. The megafossils belong to the common Upper Gondwana forms. The commonest fossil is Elatocladus. A new species of...
The presence of triprojectate pollen in the Upper Cretaceous of the Cauvery Basin is confirmed. The pollen belongs to the species Aquilapollenites bengalensis Baksi & Deb. From comparative palynology, it is deduced that Aquilapollenites yielding bed in Baksi's Bengal Palynological Zone I, i.e. Biswas’ Chara- Ostracod Facies Zone, could not be older...
The Jabalpur Group sediments are so far believed to be of non-marine origin. These sediments have yielded a rich flora comprising both mega- and microfossils. Recently, while working out the palynostratigraphy of the group, some dinoflagellate cysts were found in one of the samples from Morghat, Hoshangabad District, Madhya Pradesh. The dinoflagell...
Plant remains from a hitherto unknown locality in the Rajmahal Hills form the subject matter of this paper. The new locality lies at the base of a hill cutting near Pathargama Village. The bed is dominated by Thinnfeldia indica Feistmantel. An emended diagnosis of this species has been given. The associated ginkgoalean leaves have been described as...
The paper records the first definite ginkgoalean leaf from the Indian Triassic sediments. The leaf is petiolate with semiorbicular lamina, basal angle about 200º and veins generally 1 mm apart. As the leaf is quite different from the known ginkgoalean species, it has been given a new name, viz., Ginkgoites goiraensis sp. nov.
The age of the Tiki Formation in the South Rewa Gondwana Basin has been discussed. Available data on the vertebrate fauna, megaflora and palynoflora of the Tiki Formation have been evaluated. It is concluded that the Tiki Formation sensu lato (i.e. including the Nidhpuri beds) ranges in age from Anisian through Norian and possibly extends into the...
The paper deals with some plant fossils collected from three different exposures along the Gopad River Valley near Nidhpur, Sidhi District. The important elements of the assemblages are Sphenopteris sp., Glossopteris (8 spp.), Scutum sp., Vertebraria sp., Taeniopteris sp., Dicroidium (3 spp.) and a few scale- and seed-like bodies. On the basis of t...
A small miofloral assemblage is reported from the beds of the Maitur Formation exposed on the northern bank of the Damodar River near the village Junut, Raniganj Coalfield, West Bengal. Disaccate pollen constitute about 70 per cent of the assemblage. Triletes are only about 10 per cent, while the monosaccates are 15 per cent of the total, qualitati...
A synthesis of the floristics through the Upper Palaeozoic and Lower Mesozoic Gondwanas of India is presented. Definite lycopsids are known only from Middle Permian but could have been present in other ages as well. The solitary sphenophyll species ranges from Middle Permian to basal Triassic. Equisetales are known by vegetative shoots only, but a...
The paper reports on plant megafossils found in the lower part of the Pariwar (Parihar) Formation exposod in the Jaisalmer Basin, Rajasthan. The plant fossils belong to the groups Filicales, Cycadales, Bennettitales and Coniferales. The identifiable species are: ?Gleichenites sp., Phlebopteris sp., Frond type I, Taeniopteris vitlata, T. densinervis...
Triassic miofloras known from the territories of Algeria, Tunisia, Libya, the Saudi Arabian Peninsula, Pakistan, India and western Australia have been reviewed. These Triassic miofloras seem to represent four floral provinces, viz., 1) North Africa, 2) Arabian Peninsula, 3) Pakistan-western Australia, and 4) peninsular India. Certain miospore group...
Palynomorphs obtained from a Panchet Group Exposure in the Sukri River, near Kaima, Auranga Coalfield, Bihar are assignable to 31 species and 22 genera. One genus and five species are newly instituted. On the whole the palynological assemblage is dominated by striate bisaccate pollen. Non-striate bisaccate pollen and the pteridophytic spores share...
The Sporae dispersae of the Maitur Formation (Panchet Group) exposed in the Nonia Nala, East of Kumarpur, near Asansol comprises 40 genera and 60 species of miospores. The beds just above the Raniganj-Panchet contact have abundance of striate bisaccate pollen as in the underlying Raniganj beds. In the beds farther above the contact, the number of t...
Citations
... Evidence from South America, southern Africa, Antarctica, India, and Australia indicates that the late Permian (Lopingian) was associated with a global greenhouse climate (Gastaldo et al., 1996a). The vegetation within the Gondwanan province varied spatially but generally was dominated by species of glossopterid gymnosperms (pteridosperms) and common to rare lycophytes, cordaitaleans, sphenophytes, and ferns (Maheshwari, 1976;Rösler, 1978;Anderson and Anderson 1985;Rohn and Rösler, 1986b;Taylor and Taylor, 1990;McLoughlin 1992;Cúneo et al., 1993;McLoughlin 1994a,b;Archangelsky, 1996;Pant, 1996;McLoughlin et al., 1997; ...
... Palynofloral assemblages from different parts of Auranga Coalfield have been reported by several workers - Srivastava and Anand-Prakash (1973) recorded the miofloral assemblages from the Barakar coal bearing sediments in the Tubed and Jagaldagga areas from the Auranga Coalfield; Lele and Srivastava (1977a) recovered a miofloral assemblage from the Barren Measures Formation; Lele and Srivastava (1977b) reported miospore assemblage from Karharbari sediments dominated by trilete taxa Punctatisporites and Brevitriletes together with Banerji and Maheshwari (1975) recorded lower Triassic palynoassemblage in the Panchet beds from the Sukri River section near Kaima; Lele and Srivastava (1979) have recovered the palynological assemblages from the Karharbari, Barakar, Barren Measures and Raniganj formations; Jha and Jha (1993) recovered palynofloral assemblage from the upper Barakar Formation in Jagaldagga sector of Bihar. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/742390390333440-1554011070906_Q64/Juhi-Banerji.jpg)
... Srivastava (1974) concluded that the fossil assemblage is more similar to middle Triassic floras of the southern hemisphere and, therefore, is younger than the flora of the Panchet Formation. Roychowdhury et al. (1975) and Maheshwari (1975) were also of the same view and ruled out the possibility that two miofloras (Bharadwaj, 1969;Bharadwaj and Srivastava, 1969;Trivedi and Misra, 1970) are different expression of the same. Maheshwari (1975) suggested that the Panchet beds are much older than the Nidpur beds as the Panchet palynoflora, particularly from the upper part of that unit, is characterized by the abundance of pteridophytic spores, both megaand micro-, whereas the Nidpur palynoflora is composed mostly of saccate pollen and shows rare occurrence of pteridophytic spores. ...
... According to Schweitzer and Kirchner [19], there are only two Mesozoic genera with unilobate oneseeded lateral units, one is Drepanolepis and the other Ontheodendron. Since Ontheodendron has been recognized as a fossil stem [20,21], there is only one fossil genus left for comparison, Drepanolepis. Although both Combina and Drepanolepis appear similar to conifer cones in inverted ovules/seeds, Drepanolepis figured by Schweitzer and Kirchner is much more elongated and slenderer than Combina; most importantly, the bract encloses the axillary ovule to an unprecedented extent and forms an adaxial suture in Combina (Figure 1a,d,e), which is one of the implementations of the universal evolution trend of plant and organism reproduction [22]. ...
... Dimensions: Central body diameter 31(46)59 ~m , Overall diameter 72(94)125 ~m . Previous reports: Upper Triassic-Lower Jurassic of Australia McKellar, 1977McKellar, , 1978aMcKellar, ,b, 1979de Jersey, 1979ade Jersey, , 1980Stevens, 1981); Middle to Upper Triassic of Antarctica (Fasola, 1974, Kyle andFasola, 1978;Kyle and .Schopf, 1982); and Permian-Triassic of India Ma-heshwari, 1973;Banerji and Maheshwari, 1975;Bharadwaj and Tiwari, 1975;Maheshwari and Banerji, 1975;Tiwari and Rana, 1979Rana and Tiwari, 1980). ...
... 3. Austria (Lunz) (E. lipoldii Krausel; Pott and Krings, 2010 Maheshwari and Kumaran;Maheshwari et al., 1976). 21. ...
... There has been a great controversy on the age of the Parsora Formation based on lithostratigraphy (Dutta, 2002(Dutta, , 2004 and biostratigraphy (Shah, 2000(Shah, , 2004. From the various outcrops of the Parsora Formation (Parsora, Beli, Goira, Chicheria and Dhaurai Hill), plant macrofossils have been reported by several workers (Feistmantel, 1882;Lele, 1953Lele, , 1955Lele, , 1962aLele, , 1962bLele, , 1963Lele, , 1969Rao and Lele, 1963;Maheshwari and Banerji, 1978;Pal, 1985). On the basis of lithostratigraphy, Dutta (2002Dutta ( , 2004 suggested an early Jurassic age for the Parsora Formation. ...
... On (he basis of palynological studies, delineation of Permian-Triassic boundary from different Indian Gondwana basins have been anempted by several workers (Bharadwaj, 1970;Tiwari, 1979;Tiwari & Singh, 1982, 1986Tiwari & Tripathi, 1992;Srivas(ava & Jha, 1990, 1995Jha & Srivastava, 1996;Ram-Awa(ar, 1996;Srivastava & Bhanacharyya, 1996). However, most of the above studies are based on bore-core samples and only a few anempts have been made (0 demarca(e the actual boundary in ou(crop sections (Banerji & Maheshwari, 1974;Bharadwaj etat., 1979;Kumar, 1996;Pal etat., 1996). A continuous sequence of Raniganj-Panche( sediments is exposed in the Iria Nala and it is thus possible to observe the changing palynofloral pattern across Raniganj-Panchet transition and thereby demarcate the Permian-Triassic boundary in this section. ...
... India (Kachchh) (E. sp.; Maheshwari and Singh, 1974). 45. ...
... Spath 1933; Sahni 1938; Singh et al. 1964; Sah & Jain 1965; Bose 1966; Venkatachala & Kar 1970; Bose & Banerji 1984), but is now more generally accepted as the Early Cretaceous, especially by palynologists (e.g. Bose et al. 1982; Jain et al. 1986; Venkatachala & Sinha 1986 ). In general, Araucariacites, Callialasporites , Classopollis, Contignisporites, and Podocarpidites are common through Middle Jurassic–Early Cretaceous deposits in southern India, with the addition of such taxa as Aequitriradites, Cicatricosisporites, Cooksonites, tospora, Foraminisporis, and Impardecispora, indicating a Cretaceous age (Venkatachala & Kar 1970; Bose et al. 1982). ...
