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Dinosaurs on the Isle of Wight

Discover the Isle of Wight's prehistoric dinosaur past...

Nicknamed ‘Dinosaur Island’ - Hywel Rees explains why the Isle of Wight is such a treasure trove for dinosaur remains and why its widely regarded as the dinosaur capital of Europe and the 6th best place for dinosaur finds in the world.

Dinosaur Isle

Over 120 million years ago, the environment that existed on land that eventually formed the Isle of Wight supported a vast biodiversity of life from the smallest bacteria and insect life living in the ferns, cycads and trees to the Sauropods, the largest members of the dinosaur family. The habitat was indeed so perfect for dinosaurs that more evidence of their existence has been discovered on the Island than anywhere else in Europe.


The climate all those years ago couldn't be more different from todays. The temperature ranged from very warm to hot, in the upland areas it was humid with annual rainfall in excess of 47". In contrast, the lowlands were semi-arid, droughts lasting many months were commonplace and fires would burn uncontrollably until the heavy rains arrived, causing floods and encroachment of swamplands.

20 different species

Despite its diminutive size, the Isle of Wight has yielded the remains of more than 20 different species of dinosaur. The most common are the vegetation loving ornithopods or bird-hipped dinosaurs like the 10m long Iguanodon and the slightly smaller Mantellisaurus which both fed on trees like conifer. The herd loving Hypsilophodon and gazelle-like Valdosaurus (member of the dryosaurid family), living on plant life like cycads and ferns, were also present.

Another plant eater was Polacanthus, an impressively armoured 4m long threophoran dinosaur with rows of spikes along its backbone and the huge, migratory, conifer eating Sauropods.

There is much evidence of Saurischia or lizard-hipped dinosaurs living on the Island. Most of the small Theropods were about 2m long and competed with crocodiles for small animals and hypsilophodontids. The remains of Aristosuchus, Calamosaurus, Calamospondylus and Ornithodesmus have all been found. Of the larger Theropods, the predator Neovenator was over 6m long whilst the spinosaurid Baryonyx was over 9m - evidence suggests both existed in large numbers. Others include Eotyrannus and Thecocoelurus.

Of the bird like Pterosauria dinosaurs, the tail less Istiodactylus had a wingspan of over 4m whilst Caulkicephalus had a crest at the back of its head. Another predator found on the Island is the lagoon and shallow sea loving Leptocleidus at 3m in length. 


For its size, the Island is of significant geological interest. Tertiary deposits derived from the sea contain detritus such as shells and plants, the bones of fish and turtles, of saurians, or animals of the lizard tribe, and also of some extinct mammalia. Crocodile and shark teeth are also found in this division, as well as wood and the fruit of some former species of the Cycadeae or Pine tribe.

Below the Tertiary Eocene lies the Cretaceous group, which consists of the marine deposits of former oceans, many of them highly fossiliferous. This series is made up of the two beds of Chalk, Upper and Lower, superimposed on Chalk Marl; then follows the Upper Greensand, with its various strata of Chert, Firestone, Limestone, Freestone etc. Below this is the Lower Greensand with formations of Carstone, Sandrock, Ferruginous Sands and Atherfield Clay.

However, it is the Wealdon Group with the Vectis Formation (Wealden Shales) and Wessex Formation (Wealden Marls) that is of particular importance for dinosaur remains. The 11-mile stretch of coastline between Compton and Sandown exposes the Wealdon Outcrop and is the richest source of dinosaur fossils and bones on the Island.

The Vectis formation has three members. The Shepherds Chine member has revealed dinosaur footprints, mostly theropods and ornithopod. In the Barnes High Sandstone member, Iguanodon tracks have been found as well as the rarer theropod. Footprints have also been found in The Cowleaze member.

The Wessex formation has four layers with dinosaur footprints, commonly Iguanodon found in the thin sandstones. Dinosaur vertebrate remains are mostly found in the beds of grey clay plant debris.

Dinosaur Isle - Interactive Dinosaur Museum

Dinosaur Isle

For an unforgettable interactive dinosaur experience, head for Dinosaur Isle, a fully interactive and hands on museum in Sandown. Hear the roar of a dinosaur, smell a real Cretaceous park and watch the experts at work in the laboratory.

You can complete your prehistoric experience with a walk through a reconstructed landscape as it was 125 million years ago and see life-sized models of the dinosaurs, including a robotic, flesh eating Neovenator (a relative of T-Rex) and real life fossilised remains of animals and plants. A professional palaeontologist is usually on hand to identify any of your own fossil finds.

Dinosaur Isle Tickets

How to find Dinosaur remains

Compton Beach, Isle of Wight

The 11 mile stretch of coastline between Compton and Sandown, known as the Wealdon Outcrop is one of the richest sources of dinosaur fossils and bones in Europe.

At Hanover Point you can follow in the footsteps of the dinosaurs at low tide, when an impressive track of dinosaur footprints and foot casts are exposed in the rock. A trip to this fascinating area of coastline is a must for anyone interested in palaeontology as is a visit to the Dinosaur Isle museum in Sandown. 

More on Fossil Hunting

Walking with Dinosaurs on the Isle of Wight

Walking with Dinosaurs on the Isle of Wight

This summer you will be able to walk with Dinosaurs on the Isle of Wight as part of the Island's exciting partnership with the new 3D film Walking with Dinosaurs. Register below for details.

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news about Walking with Dinosaurs on the Isle of Wight this summer including Dinofest & our special dinosaur offers

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