If the dinosaur actually appeared near the enemy, the creature would have been exceptionally hot and dry.
Mark Witton/London Natural History Museum Management Committee
Dinosaurs may have evolved for the first time near the equator, not the southernmost part of the southern hemisphere, as I thought before. Modeling studies have shown that they are currently derived from areas that include Amazon rainforests, Congo basins, and Sahara deserts.
“Considering the blanks of fossil records and dinosaur evolution systems, it is very likely to be the center of dinosaurs.” Joel Heath University College in London.
The dinosaur evolved into Triasic Period, which is 250 million to 2 million years ago, but Heath says there is “very” uncertainty “when and where and where it has evolved. The fossil, known as the oldest of this animal, is about 230 million years ago, but it is clear enough to suggest that dinosaurs have already existed for millions of years. “There must have been a lot of things in terms of evolution of dinosaurs. But we have no fossils,” he says.
At this time, the earth looked very different. All continents were combined into a C -shaped Pangaea, which had the center of the equator. South America and Africa belonged to the southern hemisphere, like a pieces of puzzles. The earlyest known dinosaurs are from the southern parts of the two continents, ie modern Argentina and Zimbabwe, so this was considered their origin.
To learn more, Heath and his colleagues have created a computer model that can work back to time from the oldest dinosaur to the origin of the dinosaur group. They have created dozens of versions to consider uncertainty, such as the gap between the fossil records, the possibility of geographic barriers, and the continuous doubt about how the first dinosaur is related to each other.
Most of these simulations concluded that dinosaurs first appeared near the enemy and only a few originated south.
Heat tends to assume that dinosaurs cannot originate near the enemy. One reason is that there is no early dinosaur fossils in the area. Besides, it was a difficult place to live. “It was very dry and very hot,” he says. “I thought dinosaurs could not survive under that kind of conditions.”
But most models say that. Heath says, “In the past, it suggests what you didn’t really think of.”
Instead, the fact that there is no early dinosaur fossil near the equator can be a more monotonous explanation. Paleic scholars tended to discover China in North America, Europe and later. Heath says, “There are many areas that are considered quite neglected in the world.” He added that he did not find much rock of solidarity in areas related to the findings that geologists could find. “We may not be exposed in a way we can easily study.”
However, evidence has recently been supported by Heat’s thoughts. On January 8, the researchers said: David Lovelace We reported that they found it at the University of Wisconsin-Madison. Dinosaur known as the oldest Born in northern Panga. They found a new species in science. Ahvaytum bahndoiveChe, Dinosaur related to long dinosaurs Diplocus It evolved later. The team found it in the rocks of the Popo Agie Formation, which is estimated to be 230 million years ago.
Heath would not have been surrounded by the central area of the enemy if it had already been north and south of Pangea. “They must be crossing the area.”
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