Ichthyosaur Tooth Fossil Jurassic Coast Lyme Regis Dorset UK Marine Reptile – Genuine Lower Lias Fossil with Certificate of Authenticity

Description

Authentic Ichthyosaur Tooth Fossil from the Jurassic Coast of Lyme Regis

This genuine Ichthyosaur tooth fossil originates from the Black Ven Marls of the Lower Lias Formation at Black Ven, Lyme Regis, Dorset, United Kingdom, part of the world-famous Jurassic Coast UNESCO World Heritage Site. The fossil dates to the Early Jurassic Period approximately 200–190 million years ago, when warm shallow seas covered much of southern Britain.

Lyme Regis and the surrounding cliffs have produced some of the most important marine reptile fossils ever discovered. The sediments at Black Ven are particularly well known for preserving fossils of marine reptiles such as ichthyosaurs and plesiosaurs, alongside ammonites, belemnites, fish, and other marine life.

The fossil shown in the photographs is the exact specimen you will receive, carefully selected for its preservation and authenticity. The specimen includes a Certificate of Authenticity with a lifetime guarantee, confirming it is a genuine fossil.

Please refer to the photographs for full specimen sizing and scale.

About Ichthyosaurs – Marine Reptiles of the Early Jurassic

Ichthyosaurs were highly specialised marine reptiles that lived throughout much of the Mesozoic Era, particularly during the Jurassic and Cretaceous periods. Their name means “fish lizard,” reflecting their fish-like body shape and fully aquatic lifestyle.

Taxonomic classification:

• Kingdom: Animalia
• Phylum: Chordata
• Class: Reptilia
• Order: Ichthyosauria

These remarkable reptiles evolved streamlined bodies, large eyes adapted for underwater vision, and powerful tails for propulsion. Their anatomy resembled that of modern dolphins, although they were reptiles rather than mammals.

Ichthyosaurs were active predators that hunted fish, squid-like cephalopods, and other marine animals. Their jaws were lined with numerous conical teeth designed for gripping slippery prey, making them highly efficient hunters in Jurassic seas.

The early discoveries of ichthyosaur fossils from the Lyme Regis cliffs by Mary Anning in the early 19th century played a crucial role in the development of palaeontology and our understanding of prehistoric marine reptiles.

Geological Context – The Black Ven Marls of the Lower Lias

This fossil originates from the Black Ven Marls, part of the Lower Lias Formation that forms the cliffs around Lyme Regis and Charmouth. These sediments were deposited during the Early Jurassic Hettangian to Sinemurian stages, when the region lay beneath a warm shallow sea.

The Lower Lias consists mainly of alternating layers of limestone, shale, and marl, which accumulated slowly on the seafloor. These fine sediments provided ideal conditions for the preservation of marine fossils.

The marine ecosystem preserved in these rocks included a diverse range of organisms such as:

• Marine reptiles including ichthyosaurs and plesiosaurs
• Ammonites and belemnites
• Fossil fish
• Bivalves and gastropods
• Crinoids and other echinoderms

Periodic low-oxygen conditions on the seabed helped protect organic remains from decay, allowing fossils to become preserved within the sedimentary layers.

Morphology and Structure of Ichthyosaur Teeth

Ichthyosaur teeth are typically conical, robust, and slightly curved, perfectly adapted for catching and holding fast-moving prey in the marine environment. The tooth crown often displays a smooth enamel surface with subtle longitudinal ridges, while the base forms the root that once anchored the tooth into the jaw.

Characteristic features of ichthyosaur teeth include:

• A tapered conical crown
• Smooth or lightly ridged enamel surfaces
• A pointed tip designed for piercing prey
• A robust root structure for secure attachment in the jaw

These teeth were not designed for chewing but rather for grasping and swallowing prey whole. Ichthyosaurs likely fed on fish, cephalopods, and other marine organisms, capturing them with rapid jaw strikes before swallowing them intact.

Fossilised teeth are among the most commonly preserved ichthyosaur remains because tooth enamel is highly durable and fossilises well in marine sediments.

A Genuine Jurassic Marine Reptile Fossil with Certificate of Authenticity

This fossil represents a genuine piece of the marine ecosystem that existed along the Dorset coast nearly 200 million years ago. Fossils from the Lyme Regis area are highly prized by collectors due to their historical importance and connection to some of the earliest scientific discoveries of prehistoric reptiles.

Key features of this specimen include:

• Genuine Ichthyosaur tooth fossil
• Geological formation: Black Ven Marls, Lower Lias
• Age: Early Jurassic Period
• Locality: Black Ven, Lyme Regis, Dorset, United Kingdom
• From the Jurassic Coast UNESCO World Heritage Site
• Classic marine reptile tooth morphology
• The exact specimen shown in the photographs
• Includes a Certificate of Authenticity with lifetime guarantee

Ichthyosaurs were among the most successful marine reptiles of the Jurassic seas, and fossils from Lyme Regis continue to provide important insight into these ancient ocean predators. This tooth fossil offers collectors a genuine and fascinating piece of prehistoric marine life from one of the most famous fossil localities in the world.