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; sandy siltstone

Size class: macrofossils

Preservation: original carbon

Collection methods: surface (in situ),

• Fossils in the siltstone are mostly Ficus and Salix, accompanied by abundant Potamogeton along some lamina. On the other hand, there are no particularly dominant species in the sandy siltstone except for aggregated Potamogeton.

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 21256: authorized by Hallie Sims, entered by Heather Lindon on 24.06.2002

Creative Commons license: CC BY (attribution)