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Home»Science»Dinosaurs’ apparent decline before asteroid due to bad fossil records
Science

Dinosaurs’ apparent decline before asteroid due to bad fossil records

April 9, 2025No Comments3 Mins Read
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North America reconstruction approximately 66 million years ago

Alre

Dinosaurs were not underestimated before an asteroid is eliminated; Instead, there may be limited fossils for that season, according to A New study.

Whether the populations of dinosaurs were growing or declining, when he hit the planet around 66 million years ago. Specifically, the falls of the fossils of dynosids that lead to the asteroid believes that some scientists were convicted of giants, regardless of the impact.

Christopher Dean University College London and his team studied a data set of more than 8,000 fossils from four dinosis type 84 million years old in North America, including famous Tyrannosaurus Rex and Triceratops. Numerous fossils of dinosaurs were found 84 million and 75 million years old, and then this figure rises to the Chicxulube impact on the next 9 million years. But there was more.

How many lands in calculating the territories of the years, the impact of asteroids, and how many excavations expeditions have been carried out in these areas, the Dean’s team has not been found for many rocks available in today’s scientists.

Because paleontologists are looking for fossils in the ancient layers of the earth’s surface, it is like working “puzzle missing puzzles”, “Deanek says.

The team used ecological models to estimate the number of dinosaurs in these areas – including geology and geography information – their calculations suggested that the general numbers of dinosaurs have been stable before the impact of the asteroid. There were less dinosaurs at the time; We have fewer opportunities to find them, saying, “We have the ability to perceive the dinosaurs in the fossil records in the patterns we see more than anything else.”

This is growing that the fossil suggests that the body of the research suggests increasingly in the 9 million years of paleontologists who can access North America. Manabu Sakamoto University of the United Kingdom, who did not participate in the study. However, he says, which does not change the greater photo of the dinosaurs before the asteroid hit.

Dinosaurs were still populated and dominated towards the end of the time of the time, it does not seem to be a great variation of species. Sakamoto’s research He proposes that the dinosaurs walk on the ground in 175 million years, slowly slowing down by new species of dinosaurs, getting more dinosaur species.

This long-term decline in dynosaurs diversity is true, Sakamoto says, despite the new research suggests the naughty in the available fossils: “These two things are not only from each other.”

Across the boat along the Jurassic coast on board

Costa Jurassic Science: Dorset and Devon, England

Join this weekend getaway to Jurassic Coast, the UNESCO World Heritage that takes the decline phase of the Geology.

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