Where: Washington (48.7° N, 118.7° W: paleocoordinates 54.4° N, 101.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tom Thumb Member (Klondike Mountain Formation), Ypresian (56.0 - 47.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, brown mudstone

Size class: macrofossils

Collection methods: Repository: Stonerose Interpretive Center, Republic, Washington (SR).

Primary reference: S. B. Archibald, R. A. Cannings, R. J. Erickson, S. M. Bybee, and R. W. Mathewes. 2021. The Cephalozygoptera, a new, extinct suborder of Odonata with new taxa from the early Eocene Okanagan Highlands, western North America. Zootaxa 4934:1-133 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 218747: authorized by Matthew Clapham, entered by Matthew Clapham on 26.02.2021

Creative Commons license: CC BY (attribution)