Frenguellia (Lycopsida) from the uppermost Devonian of West Junggar, Xinjiang Uygur Autonomous Region, NW China, and its implications on protolepidodendralean leaf morphology and paleophytogeography

Liu, Bingcai; Wang, Kai; Zong, Ruiwen; Bai, Junhong; Yang, Ning; Wang, Yi; Xu, Hong-He

doi:10.1016/j.jop.2023.03.004

Cited by 3 publications

(2 citation statements)

References 41 publications

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“…Herbaceous lycopsids are characterized by their distinct leaf morphology, including both distal‐tip and lateral tip types (Liu et al . 2023). Genera with long geological ranges are included, extending from the Early Devonian to the early Carboniferous and belonging to three families of the Order Protolepidodendrales (Fig.…”

Section: Methodsmentioning

confidence: 99%

Plant dispersal in the Devonian world (c. 419–359 Ma)

Liu,

Wang,

Bai

et al. 2024

Palaeontology

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Dispersal, whether active or passive, plays a crucial role in biogeography by facilitating the movement of propagules away from their original location. Botanical geographical zonation, resulting from the co‐evolution of plants and their environment, has been established since the remarkable plant diversification during the Devonian Period (c. 419–359 Ma). However, a significant knowledge gap exists in understanding plant dispersal between living and fossil organisms due to the rarity of opportunities for tracing plant dispersal in geological history. In this study, we present evidence of two plant dispersal routes and verify their occurrence through the examination of geographical zonation, changes in plant diversity, and latitudinal and longitudinal gradients during the Devonian. We analyse global occurrence data from widely‐distributed and extensively‐studied Devonian plants. The two dispersal routes, namely clockwise and anticlockwise, connect the South China and Euramerica–Siberia realms. These routes clearly demonstrate inland and inter‐land dispersal models, closely linked to Devonian sea–land topography and dispersal vectors such as wind and ocean currents. Moreover, these models probably apply to all Devonian plants. Our comprehensive synthesis of plant dispersal in deep time reveals that propagule diversity and dispersal vectors have progressively increased and become more complex over time, facilitating plant colonization and diversity changes. Importantly, our study unveils the dispersal models of fossil plants, demonstrating the equivalent models observed in extant plants that have been established since the Devonian Period.

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Section: Methodsmentioning

confidence: 99%

Plant dispersal in the Devonian world (c. 419–359 Ma)

Liu,

Wang,

Bai

et al. 2024

Palaeontology

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“…The southern Junggar Basin, recognized as having the most promising coalbed methane (CBM) exploitation in the northwestern China's coal-bearing region (Fig. 1a), has attracted the attention of coal geologists because of its abundant coal resources and palaeo-climatic information (Li et al, 2014;Hou et al, 2020). The southern Junggar Basin belongs to the faulted and folded areas of the North Tian Mountains, which is geographically divided by several rivers flowing from south to north (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Repeated Wildfires in the Middle Jurassic Xishanyao Formation (Aalenian and Bajocian Ages) in Northwestern China

Hou

Shao

Liang

et al. 2022

Acta Geologica Sinica (Eng)

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The coal-bearing strata in the southern Junggar Basin in northwestern China have recently attracted the attention of coal geologists. Its abundance of coal resources is of great interest as there is a potential of unlocking details about the palaeoclimatic information. Coal deposits have the capacity to record wildfire events, even those with inefficient combustions. To characterize wildfire events and palaeoclimatic history of the Middle Jurassic Xishanyao Formation (Aalenian and Bajocian ages), 22 coal samples from borehole cores and coal mines in the southern Junggar Basin were collected and their macerals were analyzed. The results indicated that fusinite and semi-fusinite were the dominant components of inertinite with proportions of 35.27% and 54.67%, respectively. The presence of inertinite is an indicator that wildfires occurred at the time of peat land development, and the widespread occurrence suggests large scale wildfires during the Middle Jurassic. This study proposes a new parameter for the evaluation of wildfire features by combining burning frequency and burning temperature. The comprehensive evaluation index (CEI) was influenced by the lacustrine basin level and ancient plant types from a sequence framework. During the Middle Jurassic, most wildfires were surface fires with low level and ground fire with high level. High oxygen levels were estimated in the lower, middle, and upper members of the Xishanyao Formation with corresponding to 26.78%, 24.55%, and 23.55%, respectively. The high oxygen levels would be the primary cause of repeated wildfires in the Middle Jurassic. These results are helpful for understanding palaeoclimatic changes in the Middle Jurassic.

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