Description
This 4.5″ UPTONIA JAMESONI Fossil Ammonite is a rare and impressive specimen from the Lower Pliensbachian stage of the Jurassic period, discovered in the fossil-rich region of Somerset, United Kingdom. The fossil is a 100% genuine specimen, accompanied by a Certificate of Authenticity. The Uptonia jamesoni ammonite is renowned for its distinct spiral shape and fine ribbing, making it a highly sought-after find for collectors of Jurassic ammonites.
Geology and Fossil Type
- Geological Stage: Lower Pliensbachian, Jurassic
- Depositional Environment: Marine (During the Lower Pliensbachian period, the seas that covered much of the UK provided a rich marine environment for ammonites like Uptonia jamesoni. The fossil was preserved in the marine deposits of Somerset, an area known for its significant Jurassic fossil deposits.)
- Family: Ammonitidae (The Uptonia jamesoni belongs to the Ammonitidae family, known for their smooth, coiled shells.)
- Superfamily: Ammonoidea
- Order: Ammonitida (Ammonites, including Uptonia jamesoni, are part of the Cephalopoda class, which also includes squid and octopuses.)
Morphology Features
The Uptonia jamesoni ammonite features a distinct, well-defined spiral with smooth, fine ribbing along its surface. The fossil has been beautifully preserved, showcasing clear suture lines and smooth curvature that exemplify the species’ evolutionary characteristics. The coiled shell is tightly wound, displaying the intricate details typical of Ammonitidae ammonites.
Notable Features
This fossil is particularly notable for its size of 4.5 inches, making it an impressive and significant find. The distinct spiral shape, fine ribbing, and preserved suture lines all contribute to its scientific and aesthetic value. The Uptonia jamesoni is a species that is both visually striking and scientifically significant, making it a prime specimen for any serious fossil collector.
Size and Presentation
- Scale Cube: 1cm
- Full sizing is provided in the photos, so you can see the exact size of the ammonite.
- Actual Fossil: The fossil pictured is the exact piece you will receive.
Key Selling Points
- 100% Genuine Fossil
- Comes with a Certificate of Authenticity
- A rare and impressive 4.5″ Uptonia jamesoni ammonite from the Lower Pliensbachian, Jurassic period
- Distinct spiral shape, fine ribbing, and preserved suture lines
- Perfect for collectors and those interested in Jurassic ammonites and marine fossils
This 4.5″ Uptonia jamesoni Fossil Ammonite from Somerset, United Kingdom is an exceptional specimen from the Lower Pliensbachian stage of the Jurassic period. Its tight spiral, fine ribbing, and distinct suture lines make it a valuable addition to any fossil collection, particularly for those with an interest in Jurassic ammonites and marine life from this period.
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