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Alex Mccabe

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Here I have the front, left, and right profile of a rock that I came across next to a creek in Elizabeth Town, Kentucky. Given that it has symmetrical featuress on both sides it appears to be a skull of some sort. I need help identifying what this is. I was unable to upload a picture from the bottom but in the back there is what looks like an area for the spine to attach to the "skull." Help would be much appreciated.

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Thats kind of what I was thinking because there is a crystal formation visible on the bottom. Thank you for you help!

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Nice indeed, and welcome from France.:)

  • I found this Informative 1

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"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

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Try to compare with the specimens from THE FORMATION OF GEODES WITH REMARKS ON THE SILICIFICATION OF FOSSILS - Ray S. Bassler.pdf

 

IMG_0802.JPG.37dc9d56dd31c183ac85df8588f48651.thumb.JPG.996e025bea2773f729e5c5451282dd86.JPG58a75070ec5f1_PlateXXI.thumb.jpg.56e874de1ccde98fe346e2f6bc294a33.jpg

 

Explanation of Plate XXI.

 

Figs. 1-3, and 8-11, are X 11/2, while the rest are natural size. All of the specimens were collected in the Lower Knobstone shales at Button Mold Knob, Kentucky.

Figs.

1 and 2. A geode with a crinoid column as a basis.
3. A small geode with small fragments of the crinoid column still showing on its surface.
4. A larger example retaining little trace of crinoidal matter.
5. The interior of a specimen similar to fig. 3, lined with drusy quartz.
6. A geode similar to fig. 2, with the crinoidal calcite removed.
7. Another geode derived from a much fractured crinoid column.
8 to 11. Four small geodes showing their derivation by deposition of silica in crinoid columns.
12 and 13. Top and side views of two small geodes whose formation from crinoid columns is apparent from their five-sided outlines.
14. A mass of crinoidal fragments showing silica replacing the larger fractures.

  • I found this Informative 1

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

My Library

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