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 | |
Ericaceae indet. Jussieu 1789 heather | |
Lagerstroemia indica Linnaeus 1759 crepe myrtle | |
Angiospermae | |
Fabaceae indet. Lindley 1836 legume
Cercis chinensis redbud
Wisteria floribunda legume
Lespedeza cyrtobotrya bush clover | |
Rosa cf. multiflora rose | |
Ostrya cf. japonica hophornbeam
Alnus cf. japonica alder
Carpinus laxiflora hornbeam
Carpinus tschonoskii hornbeam
Betula grossa birch | |
Fagus crenata, Fagus japonica, Fagus stuxbergi, Quercus serrata, Quercus (Prinus) sp., Quercus gilva, Quercus (Cyclobalanopsis) sp., Quercus acutissima
Fagus crenata beech
Fagus japonica beech
Fagus stuxbergi beech
Quercus serrata oak
Quercus (Prinus) sp. Linnaeus 1753 oak
Quercus gilva oak
Quercus (Cyclobalanopsis) sp. Oersted ring-cupped oak
Quercus acutissima Carruthers 1862 oak | |
Tilia sp. Linnaeus 1753 linden | |
Acer palmatum maple
Acer pictum Thunberg 1784 maple
Acer diabolicum Blume 1864 maple
Aesculus turbinata soapberry | |
Smilax china greenbrier | |
Cercidiphyllum cf. japonicum katsura | |
Liquidambar formosana sweetgum | |
| |
Polypodiopsida | |