ammonites
Clarno Nut Beds Flora (Eocene of the United States)

Where: Wheeler County, Oregon (44.9° N, 120.4° W: paleocoordinates 46.5° N, 105.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Middle Eocene (48.6 - 37.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified conglomerate

• Volcanic sediments remobilized in water
• tuffaceous siltstones, sandstones and conglomerates cemented by silica and calcium carbonate

Size class: mesofossils

Preservation: permineralized, original carbon, replaced with calcite, replaced with silica

Collection methods: quarrying,

Primary reference: S.R. Manchester. 1994. Fruits and seeds of the Middle Eocene Nut Beds Flora, Clarno Formation, Oregon. Palaeontographica Americana (58)1-205 [B. Tiffney/B. Tiffney/B. Tiffney] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 21220: authorized by Bruce Tiffney, entered by Bruce Tiffney on 20.06.2002, edited by Sara Pendleton