Lot 1654
Rare Ammonite With Bite Marks. Ammonites were a squid-like animal that was covered with a shell containing inside growth chambers. They became extinct 66 million years ago at the same time as dinosaurs. Ammonites were the favorite prey for Mosasaurs who were the T-Rex of the ocean as they were the top predator. This extremely rare large 8.75 inch section of a Placentioceras sp. ammonite shows six superb distinct matching bite marks on both sides of the ammonite leaving no doubt about how this ammonite met its demise 75 million years ago in the warm shallow seas of South Dakota. The teeth marks are round and match exactly the round crocodile-like teeth that Mosasaurs possessed. In addition, the surface of the ammonite is covered with spectacular red and some green fossilized mother of pearl. This beautiful material has been designated as a gemstone with the name Ammolite. This extremely rare fossil with a story comes with a plastic display stand.
Add $20 for domestic shipping.
Estimated Value $1,000 - 1,500.
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| Realized $781 |
