Location: Eocene, Keasey Formation NW Oregon.
Length: 567 nm
I've been using the following resources:
1. Microfossils by Armstrong & Brasier, second edition
2. ANSP Diatom New Taxon File
3. JSTOR research data base
The item of interest is center image (5 mpx file), lighted bt 5600K sidelight, 10X objective. I have a sample gastropod encased in Keasey mudstone (formation can be from 1000 to > 10,000 feet in depth), and thought I'd scape a tiny bit of the the mudstone on a slide to view under my compound scope (use for solid speci