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The skin of a triceratops is seen in location in Tanis, North Dakota.
The skin of a triceratops, perfectly preserved in this fossil found at the Tanis site, is being filmed by the BBC documentary crew.BBC Studios/Eric Burge
  • Several well-preserved dinosaur fossils were found at Tanis, a site in North Dakota.

  • The dinosaurs are thought to have died when a giant asteroid hit the earth 66 million years ago.

  • Robert DePalma's work has previously attracted controversy.

The day an asteroid hit the Earth, scientists claim to have found a fossil of a dinosaur.

The leg of a Thescelosaurus can be dated back to the mass extinction event because of the debris from the impact, according to the BBC.

All non-avian dinosaurs were wiped out when the 7.5 mile-wide asteroid hit the Gulf of Mexico.

There are a lot of fossils found at the Tanis site in North Dakota. The skin of a triceratops and the Thescelosaurus leg are included.

Sir David Attenborough looks at fossilised triceratops skin using a looking glass
Sir David Attenborough will narrate the upcoming BBC documentary.BBC Studios/Jon Sayer

The site is rich in well-preserved fossils, including fish, a turtle, and even the embryo of a flying pterosaur encased in an egg.

Scientists believe that tiny glass-like particles of molten rock lodged in the gills of fish fossils were kicked up by the asteroid.

fragments from the impact of the meteorite can be seen encased in dirt.
Spherules are seen in sediment.BBC Studios/Ali Pares

We have a lot of information on this site that tells us what happened. Robert DePalma, a graduate student from the University of Manchester, UK, who leads the Tanis dig, said it was almost like watching a movie.

Prof Phil Manning told the Today program that the discovery was absolutely crazy and something he had never dreamt of.

The time resolution we can achieve at this site is beyond our imaginations. Manning said that this really should not exist, and it is absolutely beautiful.

The documentary will be released on April 15.

A discovery so 'fabulous' it has attracted skepticism

Robert DePalma, a relative of film director Brian De Palma, can be seen in the documentary wearing a fedora and tan shirt.

The last resting place of the Ark of the Covenant in the 1981 film "Raiders of the Lost Ark" was christened Tanis.

The work of Tanis and DePalma have caused controversy in the past.

Robert de Palma, leader of the expedition.
Tanis dig-leader Robert DePalma talks with a colleague.BBC / Tom Traies

The New Yorker first wrote about the Tanis site in 2019.

DePalma, who had collected few academic laurels until the discovery of the site, insists on contractual clauses that give him oversight over the specimen. According to The New Yorker, he has control over how the fossils are presented.

Kate Wong, science editor of Scientific American, said in a 2019: "The findings from the site have met with a good deal of skepticism from the paleontology community."

The dig team promised more after a few peer-reviewed papers were published.

Outside consultants have been called to verify the specimen.

Prof Paul Barrett from London's Natural History Museum looked at the leg and said it was likely a Thescelosaurus that died instantly.

It is from a group that we didn't have any previous record of what its skin looked like, and it shows that these animals were very scaly like lizards. They were not like their meat-eating counterparts.

Prof Steve Brusatte, an outside consultant on the documentary from the University of Edinburgh, told the BBC he was skeptical about the dinosaurs findings and would like to see the hypotheses subjected to peer review.

Those fish with the spherules in their gills are an absolute calling card for the asteroid. He said they have a lot of circumstantial evidence that hasn't been presented to the jury.

Prof Brusatte said that it is possible that some of the animals died before the asteroid strike but could have been exhumed and buried again.

The quality of the fossils trumped the timing controversy, according to Brussate.

Does it matter if they died on the day or years before? There is nothing else like it in North America. It doesn't have to be about the asteroid.

The original article is on Business Insider.

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