Diversity of dinosaurs has a long pedigree

One study suggests that the belief that dinosaurs underwent species diversification booming just before being wiped out was in fact just an illusion, because the major evolution of the beasts occurred millions of years ago. there.

The strange glaciation of the dinosaurs at the end of the Cretaceous about 65 million years ago raised the prevailing view that most have the features of Greek tragedy.

As soon as the rulers on Earth reached their climax, the catastrophic event, perhaps a meteorite that crashed into the Earth, pulled the curtain to end on the dreadful long dynasty. long.

Scientific evidence for this hypothesis is the number of dinosaur fossils dating back to the Cretaceous Terrestrial Revolution , about 125 million years to 80 million years ago. The book of life on Earth is changed forever.

During the era of chaotic ecological diversity, vegetative plants, insects that live in swarms, butterflies, modern lizard groups, mammals, and probably birds - all appear.

A woman is studying the head statue of the Tyrannosaurus Rex dinosaur in Stuttgart, 2007. The belief that dinosaurs undergo a species diversification boom just before being wiped out is actually just an illusion, by step. The main evolution of the beast has occurred from millions of years before.

Some experts believe that dinosaurs are also a role in this tragedy, because there are many strange fossils such as duckbilled hadrosaurs, horned ceratopsians, or terrorism. Big-headed pachycephalosaurs and other strange things all originate from this period.

But a new study published Wednesday in Britain's Proceedings of the Royal Society B said dinosaurs even played a role not in a supporting role in the DNA show.

The group of researchers led by Graeme Lloyd of Bristol University in the west of England has introduced the 'super tree' theory of dinosaur evolution, patiently analyzing over 450 species, accounting for about 70% of discovered species. .

The group concluded that the showy evolution of dinosaurs occurred in the late Triassic period , about 225 million to 200 million years ago. About 15 to 40 million years ago, the first dinosaurs appeared.

The second period of diversification occurred in the middle of the Jurassic period but was smaller, about 170 million years to 160 million years ago.

At this point, all the main dinosaur families that reigned in the Cretaceous Ground Revolution were established.

In the article, the group wrote: 'Our new evidence confirms that the Cretaceous Ground Revolution is the key to the origin of the ecosystem on the modern continent, but dinosaurs are not a component in it '.

Also according to the group's article, 'model prejudices' - or the availability of many fossils found in the above period - is reprehensible for distorting the level of competition.

The premier hypothesis for the glaciation of the great dominance is that a giant meteorite or comet has fallen into the present-day Yucatan peninsula in Mexico, exploding fire storms and dust-covered clouds. heaven, from there to make the climate change and the flora is destroyed.

Smaller species, led by mammals, are able to adapt to new environments as well as available food sources. That's why they took over the planet.