One of most complete dinosaurs ever found named after late fossil hunter

By Stephen Beech via SWNS

The most complete dinosaur discovered in Britain in the last 100 years has been named after the late fossil hunter who discovered it.

The "remarkable" specimen, which is around 125 million years old, was found in the cliffs of Compton Bay on the Isle of Wight by fossil collector Nick Chase in 2013.

Chase - described as one of Britain's "greatest-ever dinosaur hunters" and compared to 19th Century pioneer of paleontology Mary Anning - died of cancer in 2019.

But Jeremy Lockwood, a retired GP and University of Portsmouth PhD student helped with the dinosaur’s excavation and spent years analyzing the 149 different bones that make up the skeleton.

He determined that the skeleton represented a new genus and species, which he named Comptonatus chasei in tribute to Chase.

Dr. Lockwood said: “Nick had a phenomenal nose for finding dinosaur bones - he really was a modern-day Mary Anning.

"He collected fossils daily in all weathers and donated them to museums.

"I was hoping we’d spend our dotage collecting together as we were of similar ages, but sadly that wasn’t to be the case.

“Despite his many wonderful discoveries over the years, including the most complete Iguanodon skull ever found in Britain, this is the first dinosaur to be named after him.”

When it was first discovered, the specimen was thought to be a known dinosaur called Mantellisaurus.

However, Dr. Lockwood's study revealed a lot more dinosaur diversity.

He said: “I’ve been able to show this dinosaur is different because of certain unique features in its skull, teeth and other parts of its body.

"For example, its lower jaw has a straight bottom edge, whereas most iguanodontians have a jaw that curves downwards.

"It also has a very large pubic hip bone, which is much bigger than other similar dinosaurs. It’s like a dinner plate.”

Dr. Lockwood doesn’t know why the pubic hip bone, which is placed at the base of the abdomen was so big.

He said: “It was probably for muscle attachments, which might mean its mode of locomotion was a bit different, or it could have been to support the stomach contents more effectively, or even have been involved in how the animal breathed, but all of these theories are somewhat speculative.”

Dr. Lockwood named the dinosaur Comptonatus after Compton Bay where it was found and ‘tonatus’ is a Latin word meaning ‘thunderous’.

He said: “This animal would have been around a ton, about as big as a large male American bison.

"And evidence from fossil footprints found nearby shows it was likely to be a herding animal, so possibly large herds of these heavy dinosaurs may have been thundering around if spooked by predators on the floodplains over 120 million years ago.”

The dinosaur is described in a paper published in the Journal of Systematic Palaeontology .

Senior author Dr. Susannah Maidment, of the Natural History Museum who supervised Dr. Lockwood's PhD research, said: "Comptonatus is a fantastic dinosaur specimen: one of the most complete to be found in the UK in a century.

"Its recognition as a new species is due to incredibly detailed work by NHM Scientific Associate Dr. Jeremy Lockwood, whose research continues to reveal that the diversity of dinosaurs in southern England in the Early Cretaceous was much greater than previously realized.

"The specimen, which is younger than Brighstoneus but older than Mantellisaurus - two iguandontian dinosaurs closely related to Comptonatus - demonstrate fast rates of evolution in iguandontian dinosaurs during this time period, and could help us understand how ecosystems recovered after a putative extinction event at the end of the Jurassic Period."

Only four new dinosaur species were described on the Isle of Wight in the whole of the 20th Century, but there have been eight new species named in the last five years.

Dr. Lockwood said: “This really is a remarkable find.

"It helps us understand more about the different types of dinosaurs that lived in England in the Early Cretaceous.

"This adds to recent research that shows that Wessex was one of the world’s most diverse ecosystems.”

The specimen has been added to the collections at the Dinosaur Isle Museum in Sandown on the Isle of Wight.

Dr. Martin Munt, Dinosaur Isle curator, said: "Ongoing research on the museum collection continues to reveal exciting new discoveries.

"Most of Nick’s most important finds have remained on the Island, a lasting legacy.

"We can look forward to many more new types of prehistoric creatures being discovered from the Island’s cliffs and collection.”

Mike Greenslade, General Manager for the National Trust on the Isle of Wight, said: “This extraordinary discovery at National Trust's Compton Bay highlights the rich natural heritage of the Isle of Wight.

“Finding the most complete dinosaur in the UK in a century not only showcases the island's palaeontological significance but also underscores the importance of preserving our landscapes for future generations to explore and learn from."

He added: “Nick Chase's remarkable find and Jeremy Lockwood's dedicated research are a testament to the incredible history waiting to be uncovered here.

"We are thrilled to be part of this ongoing journey of discovery and scientific advancement."

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