Cenozoic igneous activity in Northern China as a mechanism for late Oligocene climate warming

Tao, Ze; He, Zhanxiang; Alves, Tiago Marcos; Guo, Xiaowen; He, Sheng; Han, Yuanjia

doi:10.21203/rs.3.rs-1631518/v1

Cited by 2 publications

(2 citation statements)

References 49 publications

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“…Another Miocene fossil, F. proreligiosa , described by Guo (2011) differs in having reticulate tertiaries. Tao (2000) described Ficus cf. auriculata , which differs from F. paleoauriculata in having brochiodromous veins and reticulate tertiaries as well as an entire margin.…”

Section: Systematicsmentioning

confidence: 99%

PaleogeneFicusleaves from India and their implications for fig evolution and diversification

Chandra

Spicer

Shukla³

et al. 2023

American J of Botany

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Premise Ficus is a scientifically and economically important genus with abundant fossil records from the Paleocene to Pleistocene, but with an intriguing early evolutionary history that remains unresolved. Here, the foliage of three well‐preserved figs is described from the early Paleogene succession of the Gurha mine, Rajasthan, India. These fossils provide new morphological data that strengthens our understanding of the past occurrences of Ficus and, alongside all validly published records of fossil figs, helps to trace the evolutionary history of figs. Methods Fossils were identified and described by comparison with their closest modern analogs using the Nearest Living Relative (NLR) technique. Validated fig records are listed and categorized into six geological time frames. Modern precipitation data for the current distributions of NLRs were downloaded from the Climatic Research Unit Timeseries. Results Fossil leaves assigned to three new species Ficus paleodicranostyla, F. paleovariegata, and F. paleoauriculata closely resemble their modern analogs based on leaf morphology. Reliable fossil records were used to hypothesize historical fig distributions and paleodispersal pathways. Precipitation data suggest higher precipitations at the fossil locality during the early Paleogene than at present. Conclusions The fossils described herein supplement fig fossil records known from other regions indicating that figs were widely diverse across low latitudes by the early Paleogene. These data support a Eurasian origin for figs, highlight a pivotal role for the Indian subcontinent during the early phase of fig diversification, and depict a perhumid‐to‐humid climate with high rainfall concordant with paleoclimate evidence from the Gurha mine.

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Section: Systematicsmentioning

confidence: 99%

PaleogeneFicusleaves from India and their implications for fig evolution and diversification

Chandra

Spicer

Shukla³

et al. 2023

American J of Botany

View full text Add to dashboard Cite

show abstract

“…Besides, the Kajun flora in Mangkang Basin, eastern Xizang and Wenshan flora in southeastern Yunnan also show high floristic similarity to modern vegetation in southwestern China [11,12]. The ages of both these floras were previously thought to be late Miocene [8,15], but radiometric dating has now confirmed these two floras to be 34.6-33.4 Ma and 33 Ma, respectively [11,12]. It seems that regional tectonics near the end of the Eocene created many of the fossil-bearing basins in southwestern China.…”

mentioning

confidence: 99%