Composition and paleoenvironment of wetland forests dominated by Glyptostrobus and Metasequoia in the latest Pliocene (2.6Ma) in central Japan

Yamakawa, Chiyomi; Momohara, Arata; Saito, Takehisa; Nunotani, Tomoo

doi:10.1016/j.palaeo.2015.12.004

Cited by 19 publications

(13 citation statements)

References 33 publications

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“…The rich fossil records in Europe probably suggest a diversity center of the subfamily there during the past. In East Asia, fossil records of Rosoideae are mainly from Japan (e.g., Ozaki, 1991;Matsushita et al, 1994;Yabe, 2008;Momohara et al, 2016Momohara et al, , 2017Ito et al, 2017;Yamakawa et al, 2017). They are only sporadically distributed in China (Huang et al, 2015;Su et al, 2016), despite the modern diversity in this region.…”

Section: Contribution To the Fossil Record Of Rosoideaementioning

confidence: 99%

Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

Huang

Zhu

Momohara³

et al. 2018

J of Sytematics Evolution

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The subfamily Rosoideae Focke (Rosaceae) has a good fossil record in the Northern Hemisphere, but these fossil records are confined mainly to a few genera, whereas the majority, in particular those with herbaceous members, are still under‐represented. In this study, we describe new fruit fossils of Rosoideae, including Fragaria achenes and Rubus endocarps, from the late Pliocene of northwestern Yunnan, Southwest China. These fossils add new accounts to the fossil archive of Rosoideae and provide the first fossil record of Fragaria in East Asia. The new fossil findings provide a historical backdrop for the modern diversity and distribution of the subfamily in northwestern Yunnan, a topographically complex area accommodating a high diversity for many plant groups. Our Rubus fossils, in combination with other nearby coeval occurrences of the genus, suggest that Rubus was already establishing its modern diversity in northwestern Yunnan during the late Pliocene. This finding enriches our knowledge of the post‐Neogene diversification of flowering plants in northwestern Yunnan, which is thought to be largely driven by dramatic mountain uplifts and environmental complications associated with the southeastern extension of the Tibetan Plateau.

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Section: Contribution To the Fossil Record Of Rosoideaementioning

confidence: 99%

Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

Huang

Zhu

Momohara³

et al. 2018

J of Sytematics Evolution

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“…Fossil seeds of Eurya that have previously been described are largely from Europe ( Chandler, 1963 , Mai, 1971 , Knobloch, 1977 , Łańcucka-Środoniowa, 1981 , Friis, 1985 , Knobloch and Mai, 1986 , van der Burgh, 1987 , Martinetto et al., 2015 ), and to a limited extent from Japan in East Asia ( Momohara, 1992 , Momohara and Saito, 2001 , Yamakawa et al., 2015 ) and Nepal in South Asia ( Bhandari et al., 2009 , Bhandari et al., 2010 ). They are assigned to 12 fossil species and one modern species ( Table 3 ).…”

Section: Systematicsmentioning

confidence: 99%

“…Although Eurya is not distributed in Europe now, its fossil record is especially rich in this continent, where at least 12 extinct species from the Late Cretaceous to early Pleistocene have been documented ( Mai, 1960 , Mai, 1971 , Knobloch, 1977 , Łańcucka-Środoniowa, 1981 , Friis, 1985 , Knobloch and Mai, 1986 , van der Burgh, 1987 , Friis et al., 2011 , Martinetto et al., 2015 ). Unlike Europe, the fossil occurrences of Eurya in East Asia are rather scarce ( Tanai and Uemura, 1991 , Momohara, 1992 , Momohara and Saito, 2001 , Yamakawa et al., 2015 ), even though this region shows the highest species richness of the genus today. Although molecular data can explain the emergence and diversification of Eurya ( Wu et al., 2007 ), the lack of fossil evidence limits further understanding of the evolution and establishment of its high modern species diversity in East Asia.…”

Section: Introductionmentioning

confidence: 99%

New fossil seeds of Eurya (Theaceae) from East Asia and their paleobiogeographic implications

Zhu

Huang

et al. 2016

Plant Diversity

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Eurya has an excellent fossil record in Europe, but it has only a few fossil occurrences in East Asia though this vast area houses the highest modern diversity of the genus. In this study, three-dimensionally preserved fossil seeds of Eurya stigmosa (Ludwig) Mai from the late Pliocene of northwestern Yunnan, southwestern China are described. The seeds are compressed and flattened, slightly campylotropous, and nearly circular to slightly angular in shape. The surface of the seeds is sculptured by a distinctive foveolate pattern, consisting of funnel-shaped and finely pitted cells. Each seed valve contains a reniform or horseshoe-shaped embryo cavity, a characteristic condyle structure and an internal raphe. These fossil seeds represent one of the few fossil records of Eurya in East Asia. This new finding therefore largely extends the distributional ranges of Eurya during Neogene. Fossil records summarized here show that Eurya persisted in Europe until the early Pleistocene, but disappeared thereafter. The genus might have first appeared in East Asia no later than the late Oligocene, and dispersed widely in regions such as Japan, Nepal, and southwestern China.

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“…Fossil representatives of this genus are quite abundant like Metasequoia and have been recorded since the early‐Early Cretaceous in middle to high latitudes of North America and Eurasia. The genus often occurs in riparian vegetation associated with Metasequoia (Yamakawa et al, , ), and it often co‐occurred with Taxodium during the Paleogene in the circum‐Japan Sea areas. According to LePage (), Glyptostrobus existed well on each continent until the Pliocene under various climate conditions.…”

Section: Resultsmentioning

confidence: 99%

Oligocene–Neogene fossil history of Asian endemic conifer genera in Japan and Korea

Yabe¹,

Jeong²,

Kim

et al. 2018

J of Sytematics Evolution

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Temporal and spatial changes of ten conifer genera that are endemic to East Asia were analyzed based on fossil data from humid temperate forests in the Japanese Islands and Korean Peninsula to elucidate the phytogeographic history, and to understand differences between those genera eliminated from the Japanese Islands and those that remained extant. All these genera, except for Thujopsis, have existed in the area since the Paleogene and remained in the Japanese islands after initial separation from the continent at the early–middle Miocene. Fossil representatives of locally extinct six genera have tendencies to adapt to wider ranges of climatic conditions than their modern relatives. Metasequoia, Glyptostrobus, and Taiwania began to change their distributions since the late Miocene possibly through habitat partitioning. Keteleeria, Pseudolarix, and Cunninghamia appeared to have expanded their habitat toward warmer conditions during the mid‐Miocene Climatic Optimum and then became restricted to warmer forest vegetation by the end of Pliocene. Overall changes in their distribution can be explained by climatic effects. On the contrary, three genera endemic to Japan (Sciadopitys, Cryptomeria, and Thujopsis) followed clearly different trends from the others. Cryptomeria and Thujopsis were especially adapted to cooler‐temperate climate and they retained their habitat areas in the northern part of Japan. During the late Miocene–Pliocene, the islands connected with the Eurasian continent again, which probably acted as a corridor for warm‐adapted genera to disperse southwest. Current data suggest that ecological requirements of each genus might be essential to determine whether they could survive on the Japanese Islands.

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Composition and paleoenvironment of wetland forests dominated by Glyptostrobus and Metasequoia in the latest Pliocene (2.6Ma) in central Japan

Cited by 19 publications

References 33 publications

Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

Fruit fossils of Rosoideae (Rosaceae) from the late Pliocene of northwestern Yunnan, Southwest China

New fossil seeds of Eurya (Theaceae) from East Asia and their paleobiogeographic implications

Oligocene–Neogene fossil history of Asian endemic conifer genera in Japan and Korea

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