A couple of fossil diatoms

[Wes]

Paralia sulcata


Actinoptychus senarius

These are fossil diatoms from Dunkirk, Maryland dating back to the miocene age (5-20 MYA).

[Rapidray]

Great photos. The second one reminds me of a biohazard symbol. Thanks for sharing.

[Hobbyst46]

Great photos. The second one reminds me of a biohazard symbol. Thanks for sharing.

Thanks for the nice images and to the ID of the second - today I saw such in fossil diatoms from Japan.

[Rapidray]

Great photos. The second one reminds me of a biohazard symbol. Thanks for sharing.

Thanks for the nice images and to the ID of the second - today I saw such in fossil diatoms from Japan.

Not an ID...I meant it looks like the biohazard symbol...sorry for the confusion there.

[Hobbyst46]

...

(Rapidtray, sorry, my response was really to the OP ... my apologies.)
Again, great image,
And yes, the image reminds the hazard sign !

[Wes]

Thank you Hobbyst and Ray

If you search this diatom on the web you might actually find a descriptive headline such as "The Radioactive Diatom" or similar, so yes its a geometrically perfect radioactivity sign (6 alternating 60˚ sectors)

[Chris Dee]

Like how you've highlighted the geometry of the second one Wes, nice work as always.

[Wes]

Like how you've highlighted the geometry of the second one Wes, nice work as always.

Thanks Chris, I decided against stacking the second one through its entire depth exactly as you said to emphasize the geometry.

[75RR]

Nice work!

... dating back to the miocene age (5-20 MYA).

Certainly adds some mystique to them. Hard to imagine so much time.

[ImperatorRex]

Very nice and esthetic photos, well done. Where did you get the samples Wes?

[Rapidray]

Thank you Hobbyst and Ray

If you search this diatom on the web you might actually find a descriptive headline such as "The Radioactive Diatom" or similar, so yes its a geometrically perfect radioactivity sign (6 alternating 60˚ sectors)

The Radioactive Diatom is so fitting! Will be giving them a search in a bit - thanks!

[Wes]

Thank you 75' and Jochen

Where did you get the samples Wes?

These are from a strew slide I bought from Diatom Lab about a year ago. I don't know how he does it but there are virtually no silicates or other junk in the slide, its only diatoms and spicules. At some point I tried making strews myself but I could never get rid of the non-diatom particles and this was when I really appreciated the technique used in the strew I got from Stefano.

[Microworld Steve]

Awesome pictures.

[Wes]

Awesome pictures.

Thank you Steve!

[Microworld Steve]

Awesome pictures.

Thank you Steve!

You're welcome.