Where: Oregon (44.9° N, 120.5° W: paleocoordinates 46.5° N, 105.5° W)

• coordinate based on political unit

When: Clarno Formation, Middle Eocene (47.8 - 37.7 Ma)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; conglomerate and sandstone

Size classes: mesofossils, microfossils

Preservation: mold/impression, adpression

Collection methods: quarrying, chemical, mechanical,

Primary reference: S. R. Manchester. 1992. Flowers, fruits, and pollen of Florissantia, an extinct Malvalean genus from the Eocene and Oligocene of western North America. American Journal of Botany 79(9):996-1008 [H. Wang/M. Arakaki/M. Arakaki]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 31681: authorized by Hongshan Wang, entered by Monica Arakaki on 22.05.2003

Creative Commons license: CC BY (attribution)