Description
Authentic Ichthyosaur Paddle Bone Fossil from the Jurassic Coast of Lyme Regis
This genuine Ichthyosaur paddle bone fossil originates from the world-famous fossil locality of Lyme Regis in Dorset, United Kingdom. The specimen comes from the Charmouth Mudstone Formation, dating to the Lower Jurassic period (Sinemurian–Pliensbachian stages) approximately 190–199 million years ago. Ichthyosaurs were fast-swimming marine reptiles that dominated the oceans during the early Jurassic, and paddle bones such as this formed part of their powerful flippers used for propulsion through ancient seas.
The fossil displayed in the photographs is the exact specimen you will receive. Each piece is carefully chosen for quality and authenticity. This fossil includes a Certificate of Authenticity lifetime guarantee generic card, confirming it is a genuine natural fossil specimen.
Please refer to the photographs for full sizing and scale of the fossil.
Geological Origin – Charmouth Mudstone Formation
This fossil comes from the Charmouth Mudstone Formation, part of the iconic Jurassic Coast of southern England, a UNESCO World Heritage Site renowned for its exceptional fossil record. The rocks exposed around Lyme Regis represent marine sediments deposited during the early Jurassic when this region lay beneath a warm, shallow sea.
The Charmouth Mudstone Formation consists predominantly of dark marine mudstones and shales formed in relatively calm offshore environments. Fine sediments settled slowly on the seabed, often rapidly burying marine organisms after death. This environment created ideal conditions for the preservation of marine reptiles, ammonites, fish, and other marine life.
These deposits are particularly famous for yielding ichthyosaur fossils, including complete skeletons, vertebrae, ribs, teeth, and paddle bones. Fossils from Lyme Regis have played a crucial role in the development of palaeontology, particularly through the discoveries of pioneering fossil collector Mary Anning, whose work helped establish ichthyosaurs as one of the most important marine reptiles of the Jurassic seas.
About Ichthyosaurs – Jurassic Marine Reptiles
Ichthyosaurs were fully aquatic marine reptiles belonging to the Order Ichthyosauria. They evolved streamlined bodies that strongly resembled modern dolphins, an example of convergent evolution where unrelated animals develop similar forms due to comparable ecological roles.
Key anatomical characteristics of ichthyosaurs include:
- Streamlined, torpedo-shaped bodies adapted for efficient swimming
- Large eye sockets allowing excellent underwater vision
- Long jaws filled with conical teeth used to capture fish and squid
- Four powerful paddle-like flippers used for steering and propulsion
- A strong tail fin that provided thrust through the water
The flippers of ichthyosaurs were composed of numerous tightly packed bones forming a rigid paddle structure. These bones, known as phalanges and metapodials, allowed the flippers to function as highly efficient hydrofoils, enabling ichthyosaurs to move swiftly through the water while pursuing prey.
The paddle bone preserved in this specimen represents part of this specialised limb structure that helped these reptiles dominate Jurassic marine ecosystems.
Jurassic Marine Ecosystem of Lyme Regis
During the Sinemurian and Pliensbachian stages of the Lower Jurassic, the seas around what is now Dorset supported an extraordinary range of marine life. The marine ecosystem included ammonites, belemnites, bivalves, crustaceans, fish, and large marine reptiles such as ichthyosaurs and plesiosaurs.
Ichthyosaurs were among the apex predators of these oceans. Their streamlined anatomy allowed them to hunt fast-moving prey and occupy a key ecological role within Jurassic marine food webs.
The fossil-rich mudstones of Lyme Regis provide an unparalleled window into these ancient ecosystems, preserving organisms that lived nearly 200 million years ago in remarkable detail.
Collector and Display Information
- Fossil Type: Ichthyosaur paddle bone
- Animal Group: Marine Reptile (Order Ichthyosauria)
- Geological Age: Lower Jurassic, Sinemurian–Pliensbachian
- Formation: Charmouth Mudstone Formation
- Locality: Lyme Regis, Dorset, United Kingdom
- Preservation: Natural bone fossil preserved in matrix
- Authenticity: 100% genuine fossil specimen
- Documentation: Includes Certificate of Authenticity lifetime guarantee card
This authentic ichthyosaur paddle bone from the Jurassic Coast represents a fascinating piece of ancient marine reptile history. Specimens from Lyme Regis are highly desirable among fossil collectors due to their historic importance and scientific significance.
A superb addition to any fossil collection, natural history display, Jurassic marine reptile collection, or educational geological set, this specimen offers a direct connection to the prehistoric seas that once covered Britain nearly 200 million years ago.
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