Description
Presenting a striking and rare 8-inch specimen of Acanthoceras rhotomagense subflexicosum, a fossil ammonite of exceptional quality and scientific interest. This stunning example hails from the Lower Cenomanian stage of the Cretaceous Period, discovered in the famous fossiliferous deposits of Yaverland, Isle of Wight, United Kingdom. The photo shows the exact piece you will receive, and it comes from the prestigious Alice Purnell Collection.
Geological Context:
- Species: Acanthoceras rhotomagense subflexicosum
- Geological Period: Cretaceous
- Stage: Lower Cenomanian (~100.5 – 93.9 million years ago)
- Location: Yaverland, Isle of Wight, United Kingdom
- Depositional Environment: Shallow marine setting, likely warm subtropical seas with rich carbonate sedimentation during high sea-level transgression.
Taxonomic Classification:
- Family: Acanthoceratidae
- Superfamily: Acanthoceratoidea
- Order: Ammonitida
Morphology Features: This species is renowned for its robust, compressed shell and strong ribbing with characteristic tubercles (knobs) on the flanks and outer whorl. The subflexicosum subspecies is particularly noted for a moderately flexuous rib pattern and a slightly more compressed form than the nominate species. This example captures these features clearly, making it a scientifically significant and aesthetically impressive fossil.
Notability: The genus Acanthoceras is a critical zonal fossil used in biostratigraphy of the mid-Cretaceous period. The rhotomagense zone marks a key interval in the Lower Cenomanian and helps correlate strata across Europe. This fossil thus holds both display and research value.
Additional Details:
- All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
- Scale Rule Squares / Cube = 1cm: Full sizing visible in photo.
- From the well-regarded Alice Purnell Collection.
Whether you are a serious collector, educator, or simply a lover of Earth’s deep-time treasures, this rare ammonite fossil from the Cretaceous chalk of the Isle of Wight is a must-have addition.
Secure a remarkable piece of natural history today!
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