A group of scientists has found for the first time embryonic remains of the group of dinosaurs carnivores including T.rex: fossilized jaws and claws show these record-sized babies closely resembled adults and were “born prepared” to hunt.

The bones indicate that these were larger than any other known dinosaur, 1 meter long, or the size of a medium dog, and that they hatched from what must have been enormous eggs, perhaps exceeding 43 cm.

Smaller cousins of the T. rex

The approximately 77-million-year-old jaw, about 3cm long, was unearthed in Montana and may belong to a species called Daspletosaurus.

The approximately 72-million-year-old wedge-shaped claw comes from the Canadian province of Alberta and may belong to a species called Albertosaurus.

Both are slightly smaller cousins of Tyrannosaurus rex. The largest known tyrannosaurs exceeded 12 meters in length and 8 tons in mass. The jaw has distinctive tyrannosaur features, including a deep groove on the inside and a prominent chin.

Edinburgh University paleontologist Greg Funston, lead author of the research published in the Canadian Journal of Earth Sciences, said that scientists were amazed at how similar embryonic bones were to adult tyrannosaurs and the jaws had functional teeth.

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The news

Embryonic remains of carnivorous dinosaurs such as a T. rex are found for the first time

was originally published in

Xataka Science

by
Sergio Parra

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Experts call it "the best impression of a 215-million-year-old dinosaur footprint" found in a decade. But its discoverer is only 4 years old..

The four-year-old girl found the dinosaur footprint on a beach in Wales that dates back 220 million years. The footprint was most likely left by a small, thin dinosaur that walked on its two hind legs.

A pristine footprint

The print measures just over 10cm long. Experts believe the footprint was probably left by a dinosaur that was about 75 centimeters tall and 2.5 meters long and walked on its two hind legs.

https://www.xatakaciencia.com/paleontologia/se-encuentra-que-posiblemente-sea-dinosaurio-raro-hallado-fecha

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Lily Wilder made the discovery on January 23 while walking along a beach in South Wales with his father and dog. The family was heading to the supermarket when Wilder saw the footprint printed on a rock.

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Shortly after posting a photo of the discovery on social media, the National Museum of Wales contacted the Wilder family, and officials eventually recovered the print and took it to the museum.

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The news

A 4-year-old girl finds a dinosaur footprint in an almost perfect state of preservation

was originally published in

Xataka Science

by
Sergio Parra

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Economic narratives: How fake news and viral stories affect the economy It is a different book about how economy and society are intertwined because it adds a new factor that is often not taken into account in this relationship: contagious folk stories that spread through word of mouth, the media or social networks.

Its author is Robert J. Shiller, 2013 Nobel Prize in Economics.

Storytelling

Popular sentiment very frequently fuels new decisions that, ultimately, in turn affect theThe decisions of economic agents, like a fish that bites the thing: how and where to invest, how much to spend and save, study at university or enter directly into the job market and a long etcetera.

Economic narratives: How fake news and viral stories affect the economy (No collection)

Today on Amazon for €20.85

The analysis of the narratives that underlie the economy, then, understood as the study of the viral spread of beliefs and stories that affect people's behavior and their economic decisions, can improve our ability to anticipate and manage future economic events.

Because, although the economy is like meteorology, a non-linear dynamic system, by understanding how stories work and how our brain is influenced by them, we will at least be able to penetrate a deeper layer, honing not only our ability predicting the economic future, but also better understanding the past.

Since before the idea of “virality” existed, the stories people told each other about their experiences or rumors they heard have transformed markets and the economy. Many times, panics, real estate bubbles, stock prices or the future of new phenomena like bitcoin have depended on what one person told another: they are "economic narratives."

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The news

Books that inspire us: 'Economic Narratives' by Robert J. Shiller

was originally published in

Xataka Science

by
Sergio Parra

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