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Pentamerous Fossil Flowers and Fruits from Rajasthan Reveals the Dominance of Flowering Plants in the Early Palaeogene of India
The dominance of angiosperms, achieved around the late Cretaceous–early Palaeogene time, can be observed through multiple well-preserved fossil flowers and fruits described from the early Palaeogene sediments of Bikaner and Barmer (Rajasthan, India). Here, we report twelve pentamerous fossil flowers categorized into three morphotypes mainly based on their petal’s shape and pattern. Fossil pollen Rhoipites anacardioides Ramanujam, extracted from the preserved androecium of one of the fossil flowers, has shown strong affinity with the modern pollen of Anacardiaceae. The pentamerous fossil fruit encompassing a single whorl of five carpels alternating with petals is similar to the extinct genus Chaneya Wang and Manchester. These fossils provide a cinematic picture of the beautiful flowering and fruiting phases during the early Palaeogene, well known for the major diversification of angiosperms.
Keywords
Angiosperm, Anacardiaceae, Chaneya, Palana Formation, Rutaceae.
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- Cui, D. F. et al., A Jurassic flower bud from China, Geol. Soc. Spec. Publ., London, 2022, 521.
- Singh, H. et al., Flowers of Apocynaceae in amber from the early Eocene of India. Am. J. Bot., 2021, 108(5), 1–10.
- Hazra, T. et al., First fossil legume flower of papilionoid affinity from India. J. Geol. Soc. India, 2021, 97, 267–270.
- Srivastava, R. et al., Pterospermumocarpon, a new malvalean fruit from the Sindhudurg Formation (Miocene) of Maharashtra, India, and its phytogeographical significance. J. Earth Syst. Sci., 2012, 121, 183–193.
- Reback, R. G. et al., Fruits of Euphorbiaceae from the Late Cretaceous Deccan intertrappean beds of India. Int. J. Plant Sci., 2021, 183(2), 128–138.
- Smith, S. Y. et al., Fossil fruits and seeds of Zingiberales from the Late Cretaceous–early Cenozoic Deccan Intertrappean beds of India. Int. J. Plant Sci., 2021, 182(2), 91–108.
- Ramteke, D. D. et al., Singpuria, a new genus of Eudicot flower from the latest Cretaceous Deccan Intertrappean Beds of India. Acta Palaeobot., 2020, 60(2), 323–332.
- Manchester, S. R. et al., Morphology and anatomy of the angiosperm fruit Baccatocarpon, incertae sedis, from the Maastrichtian Deccan Intertrappean Beds of India. Acta Palaeobot., 2019, 59(2), 241–250.
- Shukla, A. and Mehrotra, R. C., Early Eocene plant megafossil assemblage of western India: paleoclimatic and paleobiogeographic implications. Rev. Palaeobot. Palynol., 2018, 258, 123–132.
- Agnihotri, P. et al., First fossil record of a nymph (Ephemeroptera, Teloganellidae) from the Indian subcontinent. Zootaxa, 2020, 4838(1), 137–142.
- Wang, Y. F. and Manchester, S. R., Chaneya, a new genus of winged fruit from the Tertiary of North America and eastern Asia. Int. J. Plant Sci., 2000, 161, 167–178.
- Traverse, A., Why one ‘does’ paleopalynology and why it works. In Paleopalynology, Springer, Berlin, Dordrecht, 2007, 2nd edn, pp. 45–813; doi:10.1007/978-1-4020-5610-9.
- Ramanujam, C. G. K., Palynology of the Neogene Warkalli beds of Kerala state in South India. J. Palaeontol. Soc. India, 1987, 32, 26–46.
- Wodehouse, R. P., The oil shales of the Eocene Green River formation. Bull. Tor. Bot. Club, 1933, 60, 480–524.
- Assis, A. C. et al., Pollen morphology of selected species of Anacardiaceae and its taxonomic significance. Rodriguésia, 2021, 72, e01422020.
- Feng, X. X. and Jin, J. H., First record of extinct fruit genus Chaneya in low-latitude tropic of South China. Sci. China Earth Sci., 2012, 55, 728–732.
- Sauquet, H. et al., The ancestral flower of angiosperms and its early diversification. Nat. Commun., 2017, 8, 16047.
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