Coprolites are exactly that.
It’s made out of stone. Stone is old sh!t.
Coprolites are exactly that.
The bedrock that the Sphinx is carved from is apparently around 50 million years old.
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“At the edge of Cairo, three massive pyramids rise from the Giza Plateau’s Mokattam Formation, which comprises of layers of middle Eocene limestones and dolomites. These rocks, which display fossil evidence of their origins at the bottom of the Tethys Sea some 50 million years ago, provided the millions of multiton blocks used to construct the pyramids.”
https://www.earthmagazine.org/tags/ancient-egypt
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Eocene and Mokattam Formation
The Eocene Epoch, lasting from 56 to 33.9 million years ago, is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era.
https://www.geocaching.com/geocache/GC619WM_the-giza-plateau-in-egypt