Permineralized osmundaceous and gleicheniaceous ferns from the Jurassic of Inner Mongolia, NE China

Tian, Na; Wang, Yongdong; Zeng, Wu; Zheng, Sisi; Zhu, Zhipeng; Liu, Zhong‐Jian

doi:10.1007/s12549-017-0313-0

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…In Eurasia, Mesozoic osmundaceous rhizomes are known from three regions: eastern India (Rajmahal Hills), NE China, and southern Sweden (Tidwell & Ash, 1994; Tian et al, 2008; Bomfleur et al, 2015, 2017). To date, 15 species in four genera ( Claytosmunda , Millerocaulis , Osmundastrum , and possibly Leptopteris ) have been described from these localities (Mittre, 1955; Gupta, 1968, 1970; Sharma, 1973; Wang, 1983; Zhang & Zheng, 1991; Tidwell, 1994; Matsumoto et al, 2006; Cheng & Li, 2007; Cheng et al, 2007; Cheng, 2011; Bomfleur et al, 2015, 2017; Tian et al, 2013, 2014a, 2014b, 2018a). Of these 15 species, nine were described from the Jurassic deposits of NE China (Wang, 1983; Zhang & Zheng, 1991; Cheng & Li, 2007; Cheng et al, 2007; Cheng, 2011; Tian et al, 2013, 2014a, 2014b, 2018a).…”

Section: Discussionmentioning

confidence: 99%

Plenasium xiei sp. nov. from the Cretaceous of Northeast China: Additional evidence for the longevity of osmundaceous ferns

Cheng

Tian

et al. 2019

J of Sytematics Evolution

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A new species of the Osmundaceae, Plenasium xiei sp. nov., is herein described from the Cretaceous of Northeast China. The specimens examined here represent the earliest unequivocal record of the extant genus Plenasium in Eurasia based on fossil rhizomes. The rhizome consists of a central stem with a mantle of petiole bases and adventitious roots. The stem contains an ectophloic‐dictyoxylic siphonostele and a two‐layered cortex. The C‐shaped leaf trace bears two protoxylem bundles at the point of separation from the stele. The pith is heterogeneous. The parenchymatous inner cortex is thinner than the sclerenchymatous outer cortex. Lobed sclerenchyma bands occur at the adaxial sides of the stem xylem strands, in the concavity of the leaf trace, and along the adaxial side of the vascular bundles of the petiole base. In distal petiole portions, the sclerenchyma band splits into several groups in the transverse view. Sclerenchyma rings are heterogeneous with an abaxial sclerenchymatous arc of thick‐walled fibers. Numerous sclerenchyma strands of thick‐walled fibers appear in the petiolar inner cortex and the stipular wing. These fossils provide unambiguous evidence for the existence of subgenus Plenasium of modern Plenasium by at least the Late Cretaceous, demonstrating the longevity of this extant subgenus. Altogether the leaf and rhizome fossil records of Plenasium indicate that this genus was widely distributed across North America and Eurasia from the Early Cretaceous to the Early Cenozoic, followed by a range restriction to Eurasia in the Late Cenozoic. Extant Plenasium species are only known from East and Southeast Asia.

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Section: Discussionmentioning

confidence: 99%

Plenasium xiei sp. nov. from the Cretaceous of Northeast China: Additional evidence for the longevity of osmundaceous ferns

Cheng

Tian

et al. 2019

J of Sytematics Evolution

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“…The paper provides new data on the anatomical diversity and evolution of Mesozoic ferns and contributes to the understanding of Late Jurassic vegetation of Northeast China. Specifically, Tian et al (2018) report several fern rhizomes and rachides, and importantly, the authors state that the finding of Gleicheniorachis sinensis sp. nov. represents the first unequivocal Jurassic record of Gleicheniaceae in northern China and the first record of a Jurassic permineralized gleicheniaceous fern from the Northern Hemisphere (Palaeobiodiversity and Palaeoenvironments 98(1) Doi: /https://doi.org/10.1007/s12549-017-0313-0).…”

Section: The Contributionsmentioning

confidence: 99%

“…The contribution of Tian et al (2018) investigates several ferns that preserve anatomical details from Upper Jurassic strata of Inner Mongolia, China. The paper provides new data on the anatomical diversity and evolution of Mesozoic ferns and contributes to the understanding of Late Jurassic vegetation of Northeast China.…”

Section: The Contributionsmentioning

confidence: 99%