Description
A rare and scientifically important Acanthopleuroceras maugenesti Fossil Ammonite, from the Lower Pliensbachian Stage of the Lower Jurassic, collected in Radstock, Somerset, United Kingdom. This ammonite is an excellent representative of the genus Acanthopleuroceras, recognised for its strong ribbing and distinctive shell morphology. The specimen shown in the photographs is the exact one you will receive and comes with a Certificate of Authenticity.
Fossil Type & Species:
- Type: Ammonite (extinct marine cephalopod)
- Species: Acanthopleuroceras maugenesti
- Order: Ammonitida
- Superfamily: Eoderoceratoidea
- Family: Dactylioceratidae
Geological Context:
- Period: Jurassic
- Epoch/Stage: Lower Jurassic – Lower Pliensbachian (approx. 190.8 to 189 million years ago)
- Biozone: Typically associated with the Maugenesti Subzone of the Jamesoni Zone, an important ammonite horizon in Lower Pliensbachian stratigraphy
- Formation: Lower Lias Group
- Depositional Environment: Shallow marine shelf with alternating marls and limestones, excellent for ammonite preservation
Locality:
- Region: Radstock, Somerset, United Kingdom
Morphology & Features:
- Evolute shell with wide umbilicus
- Strong ribbing, with ribs bifurcating from the umbilical margin and crossing the venter
- Robust ornamentation diagnostic of Acanthopleuroceras
- Well-preserved whorl structure highlighting characteristic features
Scientific Notes:
- Acanthopleuroceras maugenesti was first described by d’Orbigny (1844), a pioneering French palaeontologist
- It is a key ammonite species for defining and correlating Lower Pliensbachian sequences in NW Europe, including the UK
Notable Details:
- Rare British ammonite with bold ribbing and excellent preservation
- 100% genuine, natural specimen – no restoration
- Scale Reference: Each square or cube in the photo = 1cm. Please check the images for accurate sizing
Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Each specimen is supplied with a Certificate of Authenticity. The fossil you see is the exact one you will receive.
This Acanthopleuroceras maugenesti ammonite is a rare and scientifically valuable fossil from the Lower Jurassic of Somerset – perfect for collectors, researchers, or natural history display.
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