Description
Rare Euhoplites subcrenatus Fossil Ammonite
This is a rare Euhoplites subcrenatus ammonite fossil from the Gault Clay Formation of Folkestone, Kent, United Kingdom, dating to the Aptian stage of the Early Cretaceous Period (approximately 125–113 million years ago). Known for its distinctively ribbed and ornate shell, this ammonite represents one of the more desirable species from the Folkestone coast, where conditions allowed for exceptional preservation.
All our fossils are 100% genuine specimens and supplied with a Certificate of Authenticity. The photographs show the exact fossil you will receive, with a 1 cm scale cube and rule squares provided for precise size reference.
Geological Context and Age
The Gault Clay Formation is one of Britain’s most famous fossil-bearing strata. Deposited during the Aptian to Albian stages of the Early Cretaceous, it consists of fine marine clays laid down in a shallow sea that once covered much of southern England. This environment was rich in life, providing abundant remains of ammonites, belemnites, bivalves, fish, and marine reptiles.
Within this context, Euhoplites subcrenatus is particularly significant as an index fossil for the later part of the Aptian stage. Its presence allows geologists to precisely date and correlate strata across Europe. Folkestone remains one of the premier localities for this species, with exposures continually yielding scientifically valuable material.
Morphology and Distinctive Features
Euhoplites subcrenatus belongs to the family Hoplitidae, within the order Ammonitida. The species is distinguished by its compressed, involute shell, with whorls that are deeply ribbed and often ornamented with crenulated (scalloped) ribbing across the flanks.
The ribs usually bifurcate or branch as they approach the venter, producing an intricate and highly decorative pattern. The venter itself is strongly keeled, contributing to hydrodynamic efficiency in swimming. The overall appearance of Euhoplites is striking and immediately recognisable, making it a prized species among collectors.
Scientific Importance
Ammonites such as Euhoplites subcrenatus are vital to biostratigraphy, the science of dating and correlating rock strata. Their rapid evolutionary turnover and distinct shell features make them excellent tools for defining narrow intervals of geological time. Euhoplites species in particular are critical for refining the Upper Aptian biozones of the Cretaceous.
This specimen also offers valuable insight into ammonite functional morphology. The heavily ribbed shell provided both structural strength and protection against predation, while the hydrodynamic keel indicates adaptation to an active, nektonic lifestyle in the mid-Cretaceous seas.
Collector and Display Value
This rare Euhoplites subcrenatus ammonite fossil from Folkestone is a highly desirable collector’s piece. Its detailed ribbing, strong keel, and historical provenance from one of Britain’s most iconic fossil localities make it a standout specimen.
Suitable for both private collections and educational displays, it illustrates the beauty and complexity of ammonite shell architecture. Fossils of this quality and rarity are increasingly difficult to obtain, especially from well-documented localities such as Folkestone.
Your Guarantee of Authenticity
- 100% genuine Euhoplites subcrenatus ammonite fossil
- Geological age: Aptian stage, Early Cretaceous (approx. 125–113 million years ago)
- Formation: Gault Clay Formation, Folkestone, Kent, UK
- Family: Hoplitidae, Order: Ammonitida
- Distinctive features: ornate ribbing, crenulated ornamentation, keeled venter
- Exact specimen shown in photographs (not a stock image)
- Supplied with a Certificate of Authenticity
- Scale cube and rule squares = 1 cm (see photos for accurate sizing)
This rare Euhoplites subcrenatus ammonite is both scientifically significant and visually impressive, making it a superb addition to any fossil collection.
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