Discovery of mangrove plant pollen from the "Shukunohora Sandstone Facies", Akeyo Formation, Mizunami Group (Miocene), Gifu Prefecture, Japan.

毅, 齊藤; 徹, 山野井; 富士子, 諸星; 博, 柴田

doi:10.5575/geosoc.101.747

Cited by 13 publications

(4 citation statements)

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“…Consequently, those from the late Burdigalian–early Langhian are more dominated by various evergreen species and some conifers typical of warmer climate conditions: e.g., Keteleeria , Pseudolarix , Cunninghamia , and Calocedrus . Pollen grains of mangrove plants have been recorded from several localities dated around the Burdigalian–Langhian boundary throughout the Japanese Islands (Yamanoi et al, ; Saito et al, ; Yamanoi et al, , , ). A number of tropical and subtropical faunal elements also have been recorded at this time (Ogasawara, ).…”

Section: Resultsmentioning

confidence: 99%

“…The latter is called the “Mid Neogene Climatic Optimum” (Tsuchi, ) or the “mid‐Miocene Climatic Optimum” (Zachos et al, ) and is characterized by northward expansion of NBEF until the northern end of Honshu. Mangrove vegetation appears to have developed several places in central and northern Honshu during this time period (Yamanoi et al, ; Saito et al, ; Yamanoi et al, , , ). Most parts of northern Japan subsequently were drowned due to rapid transgression during the Langhian.…”

Section: Discussionmentioning

confidence: 98%

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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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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 98%

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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“…However, Fagus pollen was dominant (approx. 30% of total pollen) in profiles in several strata yielding F. antipofi in the early Early Miocene Mizunami Group in Gifu Prefecture (Ina et al, 2007; Saito, 1992) and the late Early Miocene in Hokkaido (Sato, 1963), indicating occasional dominance of F. antipofi in deciduous broad‐leaved forests. In the case of pollen profiles in the latest Late Miocene (ca 6 Ma) in Tatsumitoge, Tottori Prefecture (Saito & Ichitani, 2007), in the latest Late Miocene and Pliocene (ca 7–2.6 Ma) in Himi, Toyama Prefecture (W. Wang et al, 2001), and the Pliocene (ca 5–2.6 Ma, Yanagisawa & Watanabe, 2011) in Oga Peninsula, Akita Prefecture (Yamanoi, 1978), Fagus pollen is constantly the most abundant among deciduous broad‐leaved tree pollen.…”

Section: Neogene Beeches and Their States In Forestsmentioning

confidence: 99%

Review: Biogeographic and environmental history of Fagus and beech‐dominant forest in Japan

Momohara

Ito

2023

Ecological Research

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There is a rich beech fossil record in Japan dating from the Paleogene to the Holocene, which allows for the continuous tracing of the evolutionary history of the genus and allows us to understand the environmental background that facilitated the genus to obtain a dominant state in present-day forests. In addition to the temperate climate, the oceanic climate was an important factor in controlling beech distribution and dominance in the forests in Japan. With the cooling climate, beech species began expanding their distribution in the Northern Hemisphere in the middle Eocene and appeared in Japan in the late middle Eocene. Beech species became dominant in forests in Japan during the Miocene along with the development of the oceanic climate by the opening of the Sea of Japan and with the strengthening of the monsoon. Fagus crenata appeared until the Late Pliocene and became dominant in forests in central Japan in the late Early Pleistocene coinciding with the onsetting inflow of the Tsushima Warm Current to the Sea of Japan in interglacial stages. During the full-glacial stages since the late Middle Pleistocene, the cold and dry climate caused by the strong winter monsoon limited the distribution of beeches into refugia at humid places, including the inland. During the deglaciation since ca 19 ka, the beech population began to grow and its distribution expanded, controlled by the development of the Tsushima Warm Current, as well as latitudinal and altitudinal temperature clines.

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“…However, Dr. Y. Ando, curator of the Mizunami Fossil Museum, informed us in a personal communication that the amber inclusions in question are from the Middle Miocene (16 Ma) Shukunohora Formation, Mizunami Group. The Miocene age for the Shukunohora Formation in central Japan is based on the presence of mangrove pollen in the Shukunohora sandstone fascies (Saito et al 1995). More detailed information on the excavation localities of the fossils is provided in the Results.…”

Section: Introductionmentioning

confidence: 99%

Reassessment of known fossil Pyraloidea (Lepidoptera) with descriptions of the oldest fossil pyraloid and a crambid larva in Baltic amber

Heikkilä

Solis

2018

Zootaxa

539

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The identifications of known fossils currently placed in the lepidopteran superfamily Pyraloidea are critically re-examined. Of the eleven fossils examined, only three are confirmed to show morphological characters supporting placement in the superfamily. These fossils include a crambid larva in Baltic Amber, Baltianania yantarnia, Solis gen. n. et sp. n. and the oldest known fossil pyraloid, Eopyralis morsae Simonsen, gen. n. et sp. n. The third fossil, Glendotricha olgae Kusnezov, 1941, displays apomorphic characters for Pyraloidea, but is shown to be an inclusion in copal, not Baltic amber as had been reported. Seven fossil specimens lack reliable characters and cannot be assigned to Pyraloidea with certainty: Pyralites obscurus Heer, 1856; Pyralites preecei Jarzembowski, 1980; Petisca dryellina Martins-Neto, 1998; three fossil larvae tentatively identified as Pyralidae by Zeuner (1931); and Gallerites keleri Kernbach, 1967. A possible fossil pyraloid in Mizunami amber could not be located in museum collections and available literature does not provide details to assess the validity of the identification. We discuss the contribution of the reliably identified fossils towards better understanding the evolutionary history of Pyraloidea.

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Discovery of mangrove plant pollen from the "Shukunohora Sandstone Facies", Akeyo Formation, Mizunami Group (Miocene), Gifu Prefecture, Japan.

Cited by 13 publications

References 2 publications

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

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

Review: Biogeographic and environmental history of Fagus and beech‐dominant forest in Japan

Reassessment of known fossil Pyraloidea (Lepidoptera) with descriptions of the oldest fossil pyraloid and a crambid larva in Baltic amber

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