翻訳と辞書 ・ Irvington Town Hall
・ Irvington Township
・ Irvington Township, Kossuth County, Iowa
・ Irvington Township, Washington County, Illinois
・ Irvington, Alabama
・ Irvington, Baltimore
・ Irvington, Illinois
・ Irvington, Iowa
・ Irvington, Kentucky
・ Irvington, Nebraska
・ Irvington, New Jersey
・ Irvington, New York
・ Irvington, Portland, Oregon
・ Irvington, Virginia
・ Irvington, Wisconsin
・ Irvingtonian
・ Irving–Williams series
・ Irvino English
・ Irvona, Pennsylvania
・ Irwan Fadzli Idrus
・ Irwan Prayitno
・ Irwan Shah
・ Irwandi Yusuf
・ Irwansyah
・ Irwell
・ Irwell River
・ Irwell River (New Zealand)
・ Irwell Sculpture Trail
・ Irwell Vale
・ Irwell Vale railway station
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| Irvingtonian ： ウィキペディア英語版 |
Irvingtonian
The Irvingtonian North American Land Mammal Age on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 1,800,000 to 240,000 years BP, a period of .〔(Paleobiology Database, Irvingtonian )〕 Named after an assemblage of fossils from the Irvington district of Fremont, California,〔 (1951) Late Cenozoic vertebrates of the San Francisco Bay region, ''University of California Publications, Bulletin of the Department of Geological Sciences'' 28:215-314〕 the Irvingtonian is usually considered to overlap the Lower Pleistocene and Middle Pleistocene epochs. The Irvingtonian is preceded by the Blancan and followed by the Rancholabrean NALMA stages.
The Irvingtonian can be further divided into the substages of:
*Cudahyan: Lower boundary source: base of Irvingtonian (approximate)
*Sappan: Upper boundary source: base of Rancholabrean (approximate)〔(PaleoBiology Database substages )〕
==Fauna==
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