A new study led by palaeontologists at the University of Southampton suggests that bones found on the Isle of Wight belong to 2 new species of spinosaurid, a group of predatory theropod dinosaurs closely related to the giant Spinosaurus.
The haul of bones was discovered on the beach near Brighstone over a period of several years. Keen-eyed fossil collectors initially found parts of 2 skulls, and a crew from Dinosaur Isle Museum recovered a large portion of a tail. In all, over 50 bones from the site have been uncovered from rocks that form part of the Wessex Formation, laid down over 125 million years ago during the Early Cretaceous.
The only spinosaurid skeleton previously unearthed in the UK belonged to Baryonyx, which was initially discovered in 1983 in a quarry in Surrey. Most other finds since have been restricted to isolated teeth and single bones.
Analysis of the bones carried out at the University of Southampton and published in Scientific Reports suggested they belonged to species of dinosaurs previously unknown to science.
Chris Barker, a PhD student at the University of Southampton and lead author of the study, said:
“We found the skulls to differ not only from Baryonyx, but also one another, suggesting the UK housed a greater diversity of spinosaurids than previously thought.”
The first specimen has been named Ceratosuchops inferodios, which translates as the ‘horned crocodile-faced hell heron’. With a series of low horns and bumps ornamenting the brow region the name also refers to the predator’s likely hunting style, which would be similar to that of a (terrifying) heron. Herons famously catch aquatic prey around the margins of waterways but their diet is far more flexible than is generally appreciated, and can include terrestrial prey too.
The second was named Riparovenator milnerae. This translates as ‘Milner’s riverbank hunter’, in honour of esteemed British palaeontologist Angela Milner, who recently passed away. Dr Milner had previously studied and named Baryonyx – a major palaeontological event whose discovery substantially improved our understanding of these distinctive predators.
Although the skeletons are incomplete, the researchers estimate that both Ceratosuchops and Riparovenator measured around 9 metres in length, snapping up prey with their metre-long skulls. The study also suggested how spinosaurids might have first evolved in Europe, before dispersing into Asia, Africa and South America.
Dr Neil J. Gostling of the University of Southampton, who supervised the project, said:
“This work has brought together universities, Dinosaur Isle museum and the public to reveal these amazing dinosaurs and the incredibly diverse ecology of the south coast of England 125 million years ago.”
The Early Cretaceous rocks on the Isle of Wight describe an ancient floodplain environment bathed in a Mediterranean-like climate. Whilst generally balmy, forest fires occasionally ravaged the landscape, and the remains of burnt wood can be seen throughout the cliffs today. With a large river and other bodies of water attracting dinosaurs and housing various fish, sharks and crocodiles, the habitat provided the newly discovered spinosaurids with plenty of hunting opportunities.
Collector and co-author Brian Foster from Yorkshire, who made an important contribution to the finds and publication, said:
“This is the rarest and most exciting find I’ve made in over 30 years of fossil collecting”. Fellow collector, Jeremy Lockwood, who lives on the Isle of Wight and discovered several bones added, “We realised after the two snouts were found that this would be something rare and unusual. Then it just got more and more amazing as several collectors found and donated other parts of this enormous jigsaw to the museum.”
Dr Martin Munt, Curator of Dinosaur Isle Museum, noted how these new finds cement the Isle of Wight’s status as one of the top locations for dinosaur remains in Europe. The project also solidified how collectors, museums and universities can work together to bring fossil specimens to light. Dr Munt added:
“On behalf of the museum I wish to express our gratitude to the collectors, including colleagues at the museum, who have made these amazing finds, and made them available for scientific research. We also congratulate the team who have worked on these exciting finds and brought them to publication.”
The new fossils will go on display at Dinosaur Isle Museum at Sandown.
Brilliant reconstruction image by Chris and Dan showing the location of the bone pieces. They were meaningless to me without it.
I do believe that is the Bob Seeley saurus.
Great find and puts our short time on Earth in perspective. There climate was vastly different from our own, and yet Humans weren’t around to blame and tax for the changes that occured then and since, UNTIL now.
Moron. Look at the data. The climate took millions of years to change from what it was then. We’ve changed it more in just 100 years.
And we’ll change it even more if all these houses get built! Smothering green land with concrete and destroying woodland in the name of providing “much needed” ‘homes’!
Just wanted to say, great picture by Anthony Hutchings. Very atmospheric and impressive.