Very nice, it appears you have found a fossilized egg of the early Triceratops. This artifact indeed is invaluable. The least you can expect for this egg would be.
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During the time I've been the Dinosaurs guide at xisf.org, I've received dozens of emails from readers claiming to have discovered fossilized dinosaur eggs. Create an account or sign in to comment. The eggs in the pictures are for display purposes. User Egg fossilPrivacyCookies and AdChoice. IV European Workshop on Vertebrate Palaeontology. Amniote eggs found in marine deposits were transported there from terrestrial habitats, as an embryo in an amniotic egg would be unable to survive under water. MYSTERIOUS OBJECT FOUND - Is this A Dinosaur Egg Discovered In Argentina - Hoax Or Not