Rhizopalmoxylon nypoides – a new palm root from the Deccan Intertrappean beds of Sagar, Madhya Pradesh, India

Kathal, P. K.; Srivastava, Ragini; Mehrotra, R. C.; Alexander, P. O.

doi:10.1007/s12040-017-0815-1

Cited by 6 publications

(3 citation statements)

References 40 publications

(18 reference statements)

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“…In the late Maastrichtian what is central India today was a lowland coastal zone with abundant mangrove palms ( Nipa ) represented by the pollen Spinizonocolpites , other mangrove taxa (e.g. Sonneratia ) and the mangrove fern Acrostichum intertrappeum ( Bande and Prakash, 1984 ; Chitaley, 1960 ; Chitaley and Nambudiri, 1995 ; Kathal et al., 2017 ; Prakash et al., 1990 ; Prasad et al., 2018 ; Shete and Kulkarni, 1982 ).…”

Section: An Overview Of the Cenozoic Biota Of The Tibetan Regionmentioning

confidence: 99%

Cenozoic topography, monsoons and biodiversity conservation within the Tibetan Region: An evolving story

Spicer

Farnsworth

2020

Plant Diversity

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The biodiversity of the Himalaya, Hengduan Mountains and Tibet, here collectively termed the Tibetan Region, is exceptional in a global context. To contextualize and understand the origins of this biotic richness, and its conservation value, we examine recent fossil finds and review progress in understanding the orogeny of the Tibetan Region. We examine the deep-time origins of monsoons affecting Asia, climate variation over different timescales, and the establishment of environmental niche heterogeneity linked to topographic development. The origins of the modern biodiversity were established in the Eocene, concurrent with the formation of pronounced topographic relief across the Tibetan Region. High (>4 km) mountains to the north and south of what is now the Tibetan Plateau bounded a Paleogene central lowland (<2.5 km) hosting moist subtropical vegetation influenced by an intensifying monsoon. In mid Miocene times, before the Himalaya reached their current elevation, sediment infilling and compressional tectonics raised the floor of the central valley to above 3000 m, but central Tibet was still moist enough, and low enough, to host a warm temperate angiosperm-dominated woodland. After 15 Ma, global cooling, the further rise of central Tibet, and the rain shadow cast by the growing Himalaya, progressively led to more open, herb-rich vegetation as the modern high plateau formed with its cool, dry climate. In the moist monsoonal Hengduan Mountains, high and spatially extensive since the Eocene but subsequently deeply dissected by river incision, Neogene cooling depressed the tree line, compressed altitudinal zonation, and created strong environmental heterogeneity. This served as a cradle for the then newly-evolving alpine biota and favoured diversity within more thermophilic vegetation at lower elevations. This diversity has survived through a combination of minimal Quaternary glaciation, and complex relief-related environmental niche heterogeneity. The great antiquity and diversity of the Tibetan Region biota argues for its conservation, and the importance of that biota is demonstrated through our insights into its long temporal gestation provided by fossil archives and information written in surviving genomes. These data sources are worthy of conservation in their own right, but for the living biotic inventory we need to ask what it is we want to conserve. Is it 1) individual taxa for their intrinsic properties, 2) their services in functioning ecosystems, or 3) their capacity to generate future new biodiversity? If 2 or 3 are our goal then landscape conservation at scale is required, and not just seed banks or botanical/zoological gardens.

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Section: An Overview Of the Cenozoic Biota Of The Tibetan Regionmentioning

confidence: 99%

Cenozoic topography, monsoons and biodiversity conservation within the Tibetan Region: An evolving story

Spicer

Farnsworth

2020

Plant Diversity

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“…We could add the forms Rhizopalmoxylon huepaciense and R. teguachachiense described by Cevallos Ferriz & Ricalde-Moreno (1995) and interpreted as palm rhizomes, but this is another plant part. More recently, a new species from India was described by Kathal et al (2017) as R. nipoides, which clearly corresponds to the extant Nypa Steck., a mangrove palm. Similarly, Rhizopalmoxylon sp.…”

Section: Palmoxylon Phoenicoides Hofmann 1944mentioning

confidence: 92%

“…We compared our specimens with previously described fossil forms. Rhizopalmoxylon described by Felix (1883), Sahni (1938), Gothan (1942), Grambast (1962, van der Burgh & Meulenkamp (1966), Koeniguer (1970), Tidwell et al (1972), Cevallos Ferriz & Ricalde-Moreno (1995, Mahabale & Rao (1973), Awasthi et al (1996, Bonde et al (2008, 2009) Kathal et al (2017 and Iamandei & Iamandei (2017) clearly differ anatomically from our material and are referred to other palm types.…”

Section: Rhizopalmoxylon Phoenicoidesmentioning

confidence: 99%

Palaeoxylotomical studies in the Cenozoic petrified forests of Greece. Part one – palms

Velitzelos

Iamandei

et al. 2019

Acta Palaeobotanica

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The paper reports a palaeoxylotomical study of petrified palm remains (stem, root, rachis) collected from some fossil sites of Greece (Evros, Lemnos, Lesbos and Kastoria) aged to the late Oligocene to early Miocene. Five species of Palmoxylon were identified: P. daemonoropsoides (Unger) Kirchheimer, corr., P. chamaeropsoides Iamandei et Iamandei, sp. nov., P. coryphoides Ambwani et Mehrotra, P. sabaloides Greguss, P. trachycarpoides Iamandei et Iamandei, sp. nov. and P. phoenicoides Hofmann. Also found were two species of Rhizopalmoxylon (R. daemonoropsoides Iamandei et Iamandei, sp. nov., R. phoenicoides Iamandei et Iamandei, sp. nov.) and Palmocaulon sp. aff. Phoenix L. These new identifications add new elements to the forest assemblages of the Oligocene–Miocene Greek flora, useful for understanding the evolution of the Cenozoic palaeoclimate in the Aegean area.

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Palynological assemblage from the Deccan Volcanic Province, central India: Insights into early history of angiosperms and the terminal Cretaceous paleogeography of peninsular India

Prasad¹,

Farooqui²,

Murthy³

et al. 2018

Cretaceous Research

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Rhizopalmoxylon nypoides – a new palm root from the Deccan Intertrappean beds of Sagar, Madhya Pradesh, India

Cited by 6 publications

References 40 publications

Cenozoic topography, monsoons and biodiversity conservation within the Tibetan Region: An evolving story

Cenozoic topography, monsoons and biodiversity conservation within the Tibetan Region: An evolving story

Palaeoxylotomical studies in the Cenozoic petrified forests of Greece. Part one – palms

Palynological assemblage from the Deccan Volcanic Province, central India: Insights into early history of angiosperms and the terminal Cretaceous paleogeography of peninsular India

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