Where: Tokyo, Japan (35.8° N, 139.4° E: paleocoordinates 36.1° N, 139.0° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Sayama Formation, Early/Lower Pleistocene (2.6 - 0.8 Ma)
• "The horizon of fossil assemblage was 13 m below the Sayama-gomashio tephra bed (SGO) dated to 1.64 ± 0.1 Ma by the fission track (FT) method (Muramatsu, 2008) and 16 m above the Sayama-garasushitu tephra bed (SYG) dated to 1.81 ± 0.1 Ma by the FT method (Muramatsu, 2008)." (Ito et al. 2017)
• bed-level stratigraphic resolution
Environment/lithology: fluvial; siltstone and sandstone
Size class: macrofossils
Preservation: adpression
Primary reference: A. Ito, A. Momohara, and Z. K. Zhou. 2017. Pleistocene fossil leaflets of Albizia kalkora (Roxb.) Prain (Leguminosae subfamily Mimosoideae) from central Honshu, Japan, and its implications for historical biogeography. Japanese Journal of Historical Botany 26(1):3-13 [B. Allen/B. Allen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 224546: authorized by Bethany Allen, entered by Bethany Allen on 18.03.2022
Creative Commons license: CC BY (attribution)
Taxonomic list
Ginkgoopsida | |
Ginkgo biloba ginkgo | |
Dicotyledoneae | |
Lagerstroemia indica Linnaeus 1759 crepe myrtle | |
Ericaceae indet. Jussieu 1789 heather | |
Angiospermae | |
Tilia sp. Linnaeus 1753 linden | |
Aesculus turbinata soapberry
Acer palmatum maple
Acer pictum Thunberg 1784 maple
Acer diabolicum Blume 1864 maple | |
Fabaceae indet. Lindley 1836 legume
Lespedeza cyrtobotrya bush clover
Wisteria floribunda legume
Cercis chinensis redbud | |
Rosa cf. multiflora rose | |
Quercus serrata, Quercus (Prinus) sp., Quercus gilva, Quercus acutissima, Quercus (Cyclobalanopsis) sp., Fagus crenata, Fagus japonica, Fagus stuxbergi
Quercus serrata oak
Quercus (Prinus) sp. Linnaeus 1753 oak
Quercus gilva oak
Quercus acutissima Carruthers 1862 oak
Quercus (Cyclobalanopsis) sp. Oersted ring-cupped oak
Fagus crenata beech
Fagus japonica beech
Fagus stuxbergi beech | |
Carpinus laxiflora hornbeam
Carpinus tschonoskii hornbeam
Ostrya cf. japonica hophornbeam
Alnus cf. japonica alder
Betula grossa birch | |
Liquidambar formosana sweetgum | |
Cercidiphyllum cf. japonicum katsura | |
Smilax china greenbrier | |
| |
Polypodiopsida | |