Description
Genuine Androgynoceras Ammonite Fossil from the Jurassic Coast, Dorset
This genuine Androgynoceras Ammonite Fossil is a carefully selected natural marine fossil specimen collected from the world-famous Lower Lias deposits of Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK. The exact fossil shown in the photographs is the specimen you will receive, making this an excellent opportunity to own a real piece of Jurassic Coast history.
Discovered by our own team members, Alister and Alison, this fossil has been professionally cleaned, prepped, and treated by Alison to reveal the natural detail and structure of the ammonite while preserving the integrity of the specimen. Every fossil includes a Certificate of Authenticity lifetime guarantee generic card confirming that the specimen is completely genuine.
Please refer to the photographs for full sizing and scale.
About Androgynoceras Ammonites
Androgynoceras is an extinct genus of ammonite cephalopod that lived during the Early Jurassic period approximately 190 million years ago. These fascinating marine invertebrates belonged to the subclass Ammonoidea, a diverse group of shelled cephalopods closely related to modern squid, cuttlefish, and nautilus.
This genus is recognised for its beautifully ribbed shell structure and characteristic coiled morphology. Many specimens display strong bifurcating rib patterns crossing the whorls of the shell, often creating highly decorative natural textures prized by fossil collectors and palaeontology enthusiasts alike.
Androgynoceras is associated with the Lower Jurassic Lower Lias deposits of southern England, particularly the fossil-rich coastline around Lyme Regis and Charmouth. These ancient marine sediments formed within shallow subtropical seas that covered much of what is now Dorset during the Jurassic period.
Geological Formation and Depositional Environment
This fossil originates from Stonebarrow Cliff near Charmouth on the Jurassic Coast, a UNESCO World Heritage Site internationally renowned for its exceptional fossil-bearing strata. The Lower Lias Formation consists primarily of alternating layers of limestone and shale deposited within calm offshore marine environments during the Sinemurian to Pliensbachian stages of the Early Jurassic.
The ammonites preserved within these sediments played an important role in biostratigraphy and geological dating because many species evolved rapidly and occupied relatively short geological time ranges. As a result, ammonites are frequently used as zone fossils for identifying and correlating Jurassic rock layers across Europe.
Over millions of years, the original shell material became mineralised and preserved within the sedimentary rock, producing the detailed fossil structures visible today. Natural compression, mineral replacement, and calcification processes have contributed to the preservation and appearance of this specimen.
Preparation and Natural Fossil Detail
This specimen has been carefully cleaned, stabilised, and prepared by Alison to enhance the natural features of the fossil while retaining its authentic geological character. The preparation process reveals the intricate ribbing, whorl structure, and shell morphology that make Jurassic ammonites so collectable.
Natural colour variations within the matrix and shell may include shades of grey, cream, brown, or subtle mineralised tones depending on the surrounding sediment and fossilisation conditions. Fine natural preservation details, mineral textures, and geological features are part of the uniqueness of the specimen and reflect its ancient marine origin.
Because this is a genuine fossil formed naturally over millions of years, each specimen is entirely unique in appearance, preservation, and matrix composition.
Collectable Fossil Display Specimen
Ammonites from the Jurassic Coast remain among the most sought-after British fossils due to their scientific importance, striking appearance, and historic collecting heritage connected to the Dorset coast. This specimen makes an excellent addition to:
- Fossil and ammonite collections
- Jurassic Coast collections
- Natural history displays
- Geological study collections
- Educational displays and teaching aids
- Curiosity cabinets and interior décor
- Gifts for fossil collectors and enthusiasts
The polished and prepared appearance of well-preserved ammonites makes them highly desirable display pieces for collectors of all experience levels.
Genuine Jurassic Coast Fossil
This Androgynoceras Ammonite Fossil is a genuine specimen collected from Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK by Alister and Alison, then professionally cleaned, prepped, and treated by Alison.
The exact fossil shown in the photographs is the one you will receive. Every specimen includes a Certificate of Authenticity lifetime guarantee generic card, ensuring confidence in the authenticity and provenance of this remarkable Jurassic fossil.
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