Giant dinosaurs had complex public structure, new study shows

A sociable behavior of 2 large dinosaurs has contributed to broadening their dominance, according to a study based on discoveries in Patagonia of a fossil colony with more than 200 millions over years.


H 69 millions over years, the undisputed kings of the animal world were the saurpods, giant herbivores that weighed between 8 electronic 16 electronic tons measure between 16 electronic 16 meters.

“We knew that saurpods were social animals, but we didn’t know anything about their ancestors”, explains an Argentinean Diego Pol, performs Museu Paleontolgico Egidio Feruglio, from a Patagnia.

The study, published on Thursday (20) in the journal Scientific Reviews, confirms that the ability to live in groups l existed 40 millions of years ago perform observed in other electronic species that “may play a role” zero success 2 saurpods in colonizing temperate zones adas.

The research team concentrated their excavations on Laguna Colorada, southern zero of an Argentina, where a large number of skeletons on descendants of Mussaurus patagonicus were discovered in the about decade 1970.

And they discovered fossils about 69 millions over years over 40 dinosaurs over all like ages, about adult embryos, as well as more than a hundred fossilized eggs.

“Two nesting sites were already known, in South Africa perform electronic at Tiongkok, around the same time, however zero they gave us additional information” about their inhabitants, explains Pol. “Many animals occupy the same nest without sociable interaction”, he explains, including the example of sea turtles.

However the analysis of a Lagoon Colorada It changes a whole scenario, according to a paleontologist, because it shows zero period only one nesting colony “which, however, these animals spent a good part of their existence already nts”.

To prove it, first period I need to know sony ericsson the eggs were related to the skeletons found. A chance encounter with French paleontologist Vicent Fernndez, who worked in 2004 at the European Laboratory on Synchrotron Radiation (ESRF) in Grenoble (eastern France), was of decisive importance.

The X-ray perform ESRF over Grenoble has an intensity “billion times greater than that over an industrial scanner,” said Fernndez AFP. Together with Diego Pol they had the right to use it for four days with 20 eggs. Electronic d they saw something that would have been undetectable under the fossilized perform egg layers: “the bones appeared as if in a magic spell”.

The study of these eggs, which measured only a few millimeters, revealed that “they they belonged to Mussaurus patagonicus”, explains Pol.

And this species “had a very complete public structure”, adds a paleontologist. They were segregated by age, which is still observed today in herds about large herbivores something.

Paleontologists thus found skeletons grouped about young, from even newborns, electronic further away, a group about skeletons on young dinosaurs, “against each other, at rest” position, says Pol, who believes they died at one time under drought .

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