US News: Scientists reveal discovery of new species of stegosaur - PressFrom - United Kingdom
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US NewsScientists reveal discovery of new species of stegosaur

07:10  21 august  2019
07:10  21 august  2019 Source:   msn.com

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A new species of one of the most recognisable types of dinosaur is also the oldest of its kind ever discovered , British scientists believe. Remains of a stegosaur , a dinosaur made famous through the Jurassic Park films, were studied by a team from the Natural History Museum and belong to a new

Scientists believe dinosaur dates back to 168m years ago during the middle Jurassic period. “Most known stegosaurs date from far later in the Jurassic period, making this the oldest definite stegosaur described The specimen is the first stegosaur , a thyreophoran dinosaur, to be found in North Africa.

Scientists reveal discovery of new species of stegosaur © Provided by The Press Association Detail of the bones (Trustees at Natural History) A new species of one of the most recognisable types of dinosaur is also the oldest of its kind ever discovered, British scientists believe.

Remains of a stegosaur, a dinosaur made famous through the Jurassic Park films, were studied by a team from the Natural History Museum and belong to a new genus which walked the earth around 168 million years ago.

Stegosaurs are armoured dinosaurs recognisable by spike-like bones protruding from their spine and tails.

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Lucas reclassified this species in the new genus Hoplitosaurus later that year. Lucas also re-examined the issue of the life appearance of Stegosaurus, coming to the conclusion that the plates were The origin of Stegosaurus is uncertain, as few remains of basal stegosaurs and their ancestors are known.

Later species , belonging to a subgroup called the Stegosauridae, became larger, and developed Several Russian scientists also theorize that the remains of these stegosaurs , as well as See also: Timeline of stegosaur research. The first known discovery of a possible stegosaurian was probably

Despite the specimen including only a few vertebrae and an upper arm bone, scientists concluded it was a new species and genus which dates to the middle Jurassic period – much earlier than most known stegosaurs.

The team, led by Dr Susannah Maidment, named it Adratiklit boulahfa, meaning “mountain lizard” in the Berber language.

Boulahfa is a reference to the locality in the Middle Atlas Mountains of Morocco where the specimen was found.

Scientists reveal discovery of new species of stegosaur © Provided by The Press Association (Trustees at Natural History) “The discovery of Adratiklit boulahfa is particularly exciting as we have dated it to the middle Jurassic,” said Dr Maidment.

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Scientists have named a new species of bone-headed dinosaur (pachycephalosaur) from Alberta, Canada. Acrotholus audeti (Ack-RHO-tho-LUS) was identified from both recently discovered and historically collected fossils. Approximately six feet long and weighing about 40 kgs in life, the newly

This timeline of stegosaur research is a chronological listing of events in the history of paleontology focused on the stegosaurs , the iconic plate-backed

“Most known stegosaurs date from far later in the Jurassic period, making this the oldest definite stegosaur described and helping to increase our understanding of the evolution of this group of dinosaurs.”

The specimen is the first stegosaur, a thyreophoran dinosaur, to be found in North Africa.

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Thyreophoran dinosaurs are found across much of the globe and have been mainly attributed to Laurasian rock formations, the team explained.

This has suggested that when the earth was divided into two supercontinents, Laurasia and Gondwana, thyreophorans were more common and diverse in Laurasia. But the recent discovery could dispute that.

Scientists reveal discovery of new species of stegosaur © Provided by The Press Association A complete stegosaurus fossil on display at the Natural History Museum (John Stillwell/PA) Dr Maidment added: “Most stegosaurs we know of, including the Natural History Museum’s Sophie, the most complete stegosaur discovered, have been found in Laurasian rock formations.

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The timeline below shows the date of publication of possible major scientific breakthroughs, theories and discoveries , along with the discoverer. In many cases, the discoveries spanned several years. 4th century BC – Mandragora (containing atropin)

“This, however may not mean that stegosaurs were not so common in Gondwana and in fact may be due to the fact that Gondwana rock formations have been subject to far fewer excavations and detailed studies.”

The team said the discovery adds to the theory the Gondwanan fossil record of armoured dinosaurs is significantly biased by geological factors and collection efforts.

Dr Maidment said: “What is exciting about this is that there could be many more thyreophoran dinosaurs to find in places that until now have not been excavated.”

Further discoveries in the region will provide an improved view of the distribution of this group of dinosaurs and could result in a more complete specimen of Adratiklit boulahfa, the team said.

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