Late Cenozoic plant-impressions from Mahuadanr valley, Palamu District, Bihar

Bande, M.B.; Srivastava, Gaurav

doi:10.54991/jop.1988.1632

Cited by 19 publications

(21 citation statements)

References 25 publications

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“…The fossil leaf resembling the genus Erythrina Linn. was first reported by Bande and Srivastava (1990) from the Late Tertiary sediments of Mahuadanr Valley. This fossil shows closest affinity with the extant taxon Erythrina suberosa Roxb.…”

Section: Cassia Nodosamentioning

confidence: 88%

“…Puri and Mishra (1982) recorded for the first time fossil bird, fish and plant fossils. Later, a number of leaf, flower and fruit impressions and silicified woods were recorded from this area (Bande & Srivastava, 1990;Prakash el at., 1988;; Srivastava & Srivastava, 1998;Srivastava, 1998;Singh & Prasad, 2007;Singh & Chauhan, 2008). Out ofa large number of leaf impressions collected from the Late Tertiary sediments of Jhumari nala section Mahuadanr Valley, Jharkhand, only a few are found to be well preserved and suitable for their identification.…”

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confidence: 99%

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Fossil leaf-impressions from the Late Tertiary sediments of Mahuadanr Valley, Latehar District, Jharkhand, India

Singh¹,

Prasad²

2008

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Morphotaxonomical study of the leaf impressions collected from the Late Tertiary sediments of Mahuadanr Valley, Jharkhand, India has been done. The comparison of morphological features between the fossils and extant taxa revealed the occurrence of 13 species of 5 dicotyledonous families. On the basis of present assemblage, the palaeoclimate and phytogeography of Mahuadanr area during the Late Tertiary have been deduced. Present distribution of all the modern comparable species of the fossils indicates that these are presently found to grow in the tropical forests of the Himalayan foot hills, central India, south India and adjoining area of the Mahuadanr Valley, suggesting a mixed, mesophytic type of forest was flourishing in and around the fossil locality during the sedimentation. As most of the comparable species are found now-a-days in the vicinity of fossil locality of Mahuadanr it indicates that same flora has continued till now which suggests that there has been no marked climatic change in the area since the Late Tertiary time.

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Section: Cassia Nodosamentioning

confidence: 88%

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confidence: 99%

Fossil leaf-impressions from the Late Tertiary sediments of Mahuadanr Valley, Latehar District, Jharkhand, India

Singh¹,

Prasad²

2008

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“…Amongst dipterocarps, Shorea robusta is the only taxon which today occurs as a dominant tree in the Himalayan foot•hills of central and western sector. Surprisingly not a single piece of wood or a leaf of this species has been found in the Neogene sediments of India, although a leaf of Shorea robusta has been reported from the Pleistocene (most probably Holocene) deposits of Mahuadanr, Palamu District, Bihar, along with a number of other taxa which grow in nearby deciduous forest (Bande & Srivastava, 1990). Thus the diversity of environment especially cooler climate and mountainous physiography during Pleistocene have affected the plant life of the entire region and must have given impetus to hybridization, an important mechanism in providing generic diversity and preserving the adaptability in plants (Vishnu-Mittre, 1969).…”

Section: Palaeoclimate and Floral Evolutionmentioning

confidence: 95%

Changing patterns of vegetation through Siwalik succession

Awasthi¹

1991

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The palaeobotanical record from the Neogene of Himalaya has been examined and an attempt has been made to reconstruct the vegetation patterns and throw light on palaeoclimate of the region during Siwalik time. Though the flora of the Pre-Siwalik Neogene from which the Siwalik flora evolved is poorly documented, a few palynofossils from the Kasauli and Dagshai formations indicate the existence of subtropical to temperate vegetation in the Upper reaches of the newly built Himalaya. On the contrary, a fairly rich assemblage of megafossils from the Siwalik indicates widespread tropical evergreen to moist deciduous mixed forest in the lowland sub-Himalayan zone during Middle Miocene-Pliocene The assemblage is dominated by wet evergreen dipterocarps and associated taxa, most of which are known to have entered the Indian subcontinent from southeast Asia during Miocene and subsequently spread all over and finally reached the lower slopes of sub-Himalaya. This has resulted increase in the diversity of tropical vegetation. The post-Pliocene orogeny of Himalaya brought great changes in the topography and climate which adversely affected the vegetation patterns of the region. The Early and Middle Siwalik tropical evergreen forest whose chief component are Anisoptera, Dipterocarpus, Hopea, Shorea (other than Shorea robusta), Polyalthia, Calophyllum, Aphanamixis, Dysoxylum, Gluta, Dracontomelum, Mangifera, Swintonia, Cynometra, Koompassia, Ormosia, Pongamia, Sindora, Duabanga, Diospyros spp., Myristica, etc. started dwindling towards the end of Middle Siwalik and subsequently disappeared from western and central sectors, though a few taxa like Mangifera, Litsea, Cinnamomum, Bauhinia, Dalbergia, Ficus, etc. continued to adjust to the new climatic conditions. Extinction of tropical evergreen taxa and further rise of Himalaya gave way to proliferation and diversification of tropical and subtropical moist deciduous to dry deciduous temperate vegetation in the lower and higher slopes respectively, as is also evidenced from the palynological record.

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“…from the Mahuadanr Valley, Jharkhand. Besides, the fossil fruits and woods showing close affinity with the genus Ziziphus are also known from Tertiary sediments of India (Guleria, 1992;Bande & Srivastava, 1990). The present fossil leaf has been compared with all the known species of the genus Ziziphus Mill.…”

Section: Magnoliopsidamentioning

confidence: 99%

“…A good assemblage of taxa based on mega-and micro-fossils were recorded from Late Tertiary sediments exposed all along the Birha river and its tributary, Jhumari near Rajdanda Village of Mahuadanr Valley (Bande & Srivastava, 1990;Prakash et al,1988;Srivastava & Srivastava, 1998;Srivastava, 1998;Singh & Prasad, 2007, 2008, 2009Singh & Chauhan, 2008a, b). Further study based on the leaf impressions collected from same locality revealed the occurrence of two new taxa Ziziphus funiculosa and Lagerstroemia macrocarpa of the family Rhamnaceae and Lythraceae respectively which have been described and discussed in the present communication.…”

Section: Introductionmentioning

confidence: 99%

Record of fossil leaves of Ziziphus and Lagerstroemia from Mahuadanr Valley, Jharkhand, India and their ecological implications

Singh¹,

Prasad²

2010

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A study based on the fossil leaf assemblage collected from the Late Tertiary sediments of Mahuadanr Valley revealed the occurrence of two new extant species Ziziphus funiculosa (Rhamnaceae) and Lagerstroemia macrocarpa (Lythraceae) of the Dicotyledon in the area during Late Tertiary Period. Present day distribution of these modem comparable species of the fossils indicates that both the taxa presently distributed in the moist deciduous forests ofthe northeast India, central and south India, which suggests that such type offorest was flourishing in and around the fossil locality during the sedimentation.

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Late Cenozoic plant-impressions from Mahuadanr valley, Palamu District, Bihar

Cited by 19 publications

References 25 publications

Fossil leaf-impressions from the Late Tertiary sediments of Mahuadanr Valley, Latehar District, Jharkhand, India

Fossil leaf-impressions from the Late Tertiary sediments of Mahuadanr Valley, Latehar District, Jharkhand, India

Changing patterns of vegetation through Siwalik succession

Record of fossil leaves of Ziziphus and Lagerstroemia from Mahuadanr Valley, Jharkhand, India and their ecological implications

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