Where: Gunma, Japan (36.3° N, 139.0° E: paleocoordinates 37.6° N, 137.4° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Itahana Formation (Tomioka Group), Tortonian to Tortonian (11.6 - 5.3 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine
Size class: macrofossils
Preservation: original carbon
Collection methods: surface (in situ),
• Alnus occupies about 60% of the total specimens, followed by Rosa and Ficus. No species of evergreen broad leaved trees are found.
Primary reference: K. Ozaki. 1991. Late Miocene and Pliocene Floras in Central Honshu, Japan. Bulletin of Kanagawa Prefectural Museam Natural Science Special Issue 1-244 [H. Sims/H. Lindon/H. Lindon]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 21258: authorized by Hallie Sims, entered by Heather Lindon on 24.06.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Taxodium dubium Sternberg 1824 cypress | |
Angiospermae | |
"Ficus" tiliaefolia Br fig | |
Rosa usyuensis rose | |
Salix hokkaidoensis willow
Salix ksuzukii willow
Salix muraii willow
Salix parasachalinensis willow
Salix sp. Linnaeus 1753 willow | |
Alnus cf. japonica alder
Ostrya sp. Scopoli 1760 hophornbeam | |
Caesalpinia hokiana legume
Cercis miochinensis redbud | |
Euodia rutaecarpa citrus | |
? Sapindus sp. Linnaeus 1753 soapnut | |
Cornus cf. miowalteri dogwood | |
Ilex cf. serrata holly | |
Lonicera sp. Linnaeus 1753 honeysuckle | |
? Phragmites sp. Adanson 1763 common reed |