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Egidio 1

by Fabio Cipri
(Riyadh, Saudi Arabia)

This fossil has been found at 150 km Northern of Riyadh, Saudi Arabia.

Unfortunately the main body is really damaged whereas 4 plaques of the shell (?) are in really good conditions.

All around is plenty of fossils of corals, and ammonites.

But this shellfish (?) is really a mysterious for us.

Any suggestion for the identification?

Please contact me at

Comments for Egidio 1

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by: Michael

Actually several chambers of a Nautilus fossil, evident from the very simple suture (and the siphuncle will be in the middle of the dividing wall, or septum). Ammonites have a much more convoluted suture between the chambers, and the siphuncle runs right around the outer edge (called the venter in ammonites because they coiled round with their backs on the inside of the coil).

Saudi Arabia Fossil
by: Douglas

Fossil fragments are hard to be sure about. You have to use your imagination to picture what it could have been as a whole.

Because you said there are ammonite fossils in the area that would be my guess. The layered look of the segments could be a part of an ammonite.

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