These are fossil diatoms from St Laurent La Vernede, France.
Oblique images - American Optical Series 4 Apostar, 90x apo, oblique mask, Canon 70D. All are stacks, number of images as marked, Zerene Stacker, PMax process.
Darkfield images - American Optical 10, 100x Plan Iris Oil, Toric Darkfield condenser, Canon 70D. All are stacks, number of images as marked, Zerene Stacker, PMax process.
Backgrounds cleaned up on all images.
85µm Stack of 19
36µm Stack of 8
48µm Stack of 11
125µm Stack of 7
44µm Stack of 3
44µm Stack of 6
50µm Stack of17
43µm Stack of 5
Fossil Diatoms of St Laurent La Vernede
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