Fossilized ammonite specimen
Updated October 16, 2026
| Lot number | 24 |
| Auction | Rust, Glory, Timber & Trophy Collectible Online Auction |
| Date | October 25, 2026 at 6:00 PM EDT |
| Auction house | 2nd Rodeo LLC |
| Location | St. Joseph, Michigan |
Fossilized ammonite specimen, Perisphinctes species, mounted on display board. This ammonite fossil dates from the Jurassic period, approximately 150 to 200 million years ago, when these marine cephalopods thrived in ancient seas. Perisphinctes ammonites are characterized by their distinctive ribbed spiral shells and were widespread throughout the Tethys Ocean. These creatures were relatives of modern nautilus and squid, and their fossilized remains provide crucial evidence for understanding prehistoric marine ecosystems and geological dating. Ammonite fossils are highly prized by paleontology enthusiasts, fossil collectors, and natural history museums for their aesthetic beauty and scientific significance. The intricate spiral patterns and well-preserved ribbing make them popular decorative pieces, while their geological importance attracts serious collectors and researchers. These specimens serve as both educational tools and striking natural art pieces, appealing to anyone interested in Earth's ancient history and the evolution of marine life.
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