Palynoflora from intertrappean localities in southeastern part of Deccan volcanic province: taxonomic composition, age and paleogeographic implications

Samant, Bandana; Kumar, Deepesh; Mohabey, D. M.; Kapgate, Dashrath K.; Manchester, Steven R.; Patil, Sharad Kumar

doi:10.1016/j.palwor.2019.05.010

Cited by 17 publications

(6 citation statements)

References 30 publications

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“…Original description by Samant et al (2020): Pollen grain tricolpate, rounded triangular, 20–25 µm in size. Intectate.…”

Section: Resultsmentioning

confidence: 99%

“…Nearest Living Relative : Samant et al (2020) suggested the similarity of this pollen type with Euphorbiaceae pollen without reference to a subfamily. However, based on the detailed morphological comparative study, we propose its similarity with the genus Endospermum Benth.…”

Section: Resultsmentioning

confidence: 99%

“…However, S.barghoornii is differentiated from all Crotonoideae pollen in having a monosulcate aperture with crenelated muri arranged in a croton pattern. The earliest fossil record that compares to Crotonoideae has been reported by De Lima (1976) from Albian sediments of Brazil (Samant et al, 2020), referable to the fossil genus Crotonipollis Lima (1976). Crotonoideaetype pollen fossils reported from Maastrichtian deposits of South America, Somalia and India show affinities with the extant tribes Adenoclineae (Mull.…”

Section: Introductionmentioning

confidence: 99%

“…and Jatropheae (Meisn.) Pax of Crotonoideae (Samant et al, 2020; Schrank, 1994). Several other fossils of Crotonoideae include leaves, fruits, seeds, and laticifers from the Cenozoic sedimentary deposits of South America, Africa, India, Mexico, Eurasia, Southeast Asia and Australia (Table 1).…”

Section: Introductionmentioning

confidence: 99%

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Biogeographic and evolutionary history of Crotonoideae based on pollen evidence from Indian Late Cretaceous and Paleogene sediments

Bansal¹,

Mishra²,

Prasad³

2022

Biotropica

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Euphorbiaceae Juss. is a globally distributed angiosperm family with considerable diversity. It is divided into five subfamilies, each of which possesses pollen of distinct morphology. The subfamily Crotonoideae, occurring in evergreen, moist deciduous as well as dry deciduous forests of the world, shows a disjunct distribution pattern in Gondwana and Southeast Asia. This subfamily underwent multiple speciation and extinction events during the northward voyage of the Indian Plate during the Late Cretaceous-early Paleogene. We studied Crotonoideae fossil pollen from the Late Cretaceous Deccan Intertrappeans (Central India) and early Paleogene sediments from the western Indian lignite mines, and as a result, report 10 pollen fossils showing similarity with the extant genera Blachia, Croton, Endospermum, Jatropha, Klaineanthus, and Tetrorchidium, representing 4 tribes of Crotonoideae viz. Adenoclineae, Codiaeae, Crotoneae, and Jatropheae. Fossil evidences from the present study suggest a Gondwanan origin for Crotonoideae. Based on the extant and fossil species, Africa could be the place of origin for most of the Crotonoideae lineages that later dispersed to India via the Kohistan-Ladakh Island Arc during the late Maastrichtian-Paleocene time. The former distribution of Crotonoideae in mid-high latitudinal regions is due to the dispersal of the subfamily from Africa to mid latitudinal regions of northern hemisphere during the early Paleogene via the boreotropical dispersal route. This study also corroborates the "Out of India" hypothesis for the dispersal of Crotonoideae from India to Southeast Asia. The present deep-time fossil records from India discussed in this study substantiate the evolutionary and biogeographic history of subfamily Crotonoideae.

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“…Original description by Samant et al (2020): Pollen grain tricolpate, rounded triangular, 20–25 µm in size. Intectate.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biogeographic and evolutionary history of Crotonoideae based on pollen evidence from Indian Late Cretaceous and Paleogene sediments

Bansal¹,

Mishra²,

Prasad³

2022

Biotropica

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“…al. 2015) and palynological inferences (Samant et al 2019) species by validating the name, to document more clearly the morphology and anatomy of this strange fruit, and to map its geographic distribution among multiple localities of the Deccan Intertrappean chert.…”

mentioning

confidence: 99%

Morphology and anatomy of the angiosperm fruit Baccatocarpon, incertae sedis, from the Maastrichtian Deccan Intertrappean Beds of India

Manchester

Kapgate²,

Ramteke³

et al. 2019

Acta Palaeobotanica

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Distinctive permineralized fruits of Baccatocarpon mohgaoense (Paradkar & Dixit) comb. nov. have been collected from several sites in the late Maastrichtian of the Deccan Intertrappean beds of Central India. We describe the peculiar fruits in detail, based on combined investigations by reflected light and X-ray CT scanning. Three-dimensional renderings and virtual slices confirm that the fruits have two lateral single-seeded locules and a central sterile chamber filled with parenchyma. The endocarp is thin-walled and opens apically longitudinal valves. Here we validate the generic name Baccatocarpon Bhowal & Sheikh ex Manchester, Ramteke, Kapgate & S.Y. Smith and recognize a single species, for which the name Baccatocarpon mohgaoense (Paradkar & Dixit) comb. nov. has priority. We document the occurrence of this species in cherts from the paleobotanical sites known as Bhutera, Keria, Mahurzari, Mohgoankalan, Paladaun, Marai Patan and Shibla. The systematic affinity of these fruits remains mysterious.

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Palynology of Upper Cretaceous-Early Paleocene Deccan Volcanic Associated Sediments: Implication in Understanding Age, Climate and Depositional Environments

Samant,

Thakre,

Mohabey

2024

Society of Earth Scientists Series

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Palynoflora from intertrappean localities in southeastern part of Deccan volcanic province: taxonomic composition, age and paleogeographic implications

Cited by 17 publications

References 30 publications

Biogeographic and evolutionary history of Crotonoideae based on pollen evidence from Indian Late Cretaceous and Paleogene sediments

Biogeographic and evolutionary history of Crotonoideae based on pollen evidence from Indian Late Cretaceous and Paleogene sediments

Morphology and anatomy of the angiosperm fruit Baccatocarpon, incertae sedis, from the Maastrichtian Deccan Intertrappean Beds of India

Palynology of Upper Cretaceous-Early Paleocene Deccan Volcanic Associated Sediments: Implication in Understanding Age, Climate and Depositional Environments

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