Endemoceras regale Ammonite Fossil Hauterivian Cretaceous Speeton UK Genuine Certified

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Endemoceras regale Ammonite Fossil Hauterivian Cretaceous Speeton UK Genuine Certified

Endemoceras regale Ammonite Fossil Hauterivian Cretaceous Speeton Clay United Kingdom Rare Authentic Genuine Certified Specimen

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Authentic Endemoceras regale Ammonite Fossil from Speeton, United Kingdom

This Endemoceras regale ammonite fossil was discovered in the Speeton Clay Formation of Yorkshire, United Kingdom, a world-renowned site for Early Cretaceous marine fossils. Belonging to the Hauterivian stage of the Lower Cretaceous, this specimen is approximately 132–129 million years old. The fossil offered here is the exact specimen shown in the photographs, displayed with a 1 cm scale cube for reference, and comes with a Certificate of Authenticity, ensuring it is a genuine piece of natural history.

Geological Context – Speeton Clay Formation

The Speeton Clay Formation is one of the most important Early Cretaceous marine deposits in Europe. Located along the coast of Yorkshire, this geological formation consists of finely bedded clays and marls that were deposited in a deep marine environment. These conditions were ideal for preserving a diverse array of marine fossils, particularly ammonites, belemnites, bivalves, and occasional vertebrate remains. The formation has long been studied by palaeontologists for its detailed record of the Lower Cretaceous marine ecosystem, with Endemoceras regale being one of its most significant ammonite species.

Scientific Classification

• Class: Cephalopoda
• Subclass: Ammonoidea
• Order: Ammonitida
• Superfamily: Perisphinctoidea
• Family: Endemoceratidae
• Genus: Endemoceras
• Species: Endemoceras regale

This ammonite is particularly important as it represents a key index fossil for the Hauterivian stage, used by geologists to correlate marine sediments across northern Europe. Its presence helps define specific biozones within the Speeton Clay, adding both scientific and stratigraphic importance to the specimen.

Morphological Features

The shell of Endemoceras regale is typically large and strongly ribbed, with an evolute coiling pattern that allows all earlier whorls to remain visible. The ribs radiate boldly across the flanks and continue over the venter, giving the fossil a striking and robust appearance. These morphological traits not only helped the ammonite maintain buoyancy and mobility in the ancient seas but also serve as a distinguishing feature for collectors and palaeontologists today. The ribbing and whorl structure make E. regale one of the most easily recognisable ammonites from the Speeton Clay Formation.

Palaeoenvironment and Ecology

During the Hauterivian, the Yorkshire coastline was submerged beneath a warm epicontinental sea. Ammonites such as Endemoceras regale thrived in these waters, preying on plankton, small molluscs, and crustaceans. They were active swimmers, using jet propulsion for movement, and played a central role in the marine food chain. Their abundance and diversity in the Speeton Clay deposits demonstrate the productivity of this ecosystem and highlight the ammonites’ role as a cornerstone species in Early Cretaceous seas.

Collector and Display Significance

This specimen of Endemoceras regale is not only a scientifically important fossil but also an impressive display piece due to its bold ribbing and excellent preservation. It makes a valuable addition to any fossil collection, whether for a seasoned palaeontologist, an educator, or a natural history enthusiast. The Speeton Clay Formation is highly regarded among collectors, and ammonites from this locality are sought after for their geological and historical significance.

Each specimen is carefully selected and guaranteed as a 100% genuine fossil. With its clear provenance, outstanding morphology, and connection to one of the UK’s most famous fossil-bearing formations, this Endemoceras regale ammonite is a remarkable piece of Earth’s deep history and an excellent addition to any serious fossil collection.