Scientists say that T.Rex was more like a smart crocodile than a genius

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Last year’s study, authored by Brazilian neuroscientist Dr Suzana Herculano-Houzel, analysed T.Rex skulls and studied the brains of dinosaur descendants, including modern birds.
They found that previous assumptions about brain size in dinosaurs – and the number of neurons their brains contained – were unreliable.
Rather than 3 billion neurons, they say the number was 1.7 billion at the very most, but likely a lot less than this.
Dr Caspar said there’s a ‘great number of issues’ with the 2023 study.
‘The 2023 paper also took its dinosaur brain and body mass estimates from various and in parts non-compatible sources, which resulted in a highly inconsistent dataset.’
‘Although it might sound intuitive, results from behavioral studies show that neuron numbers are often bad indicators of the performance of a species,’ Dr Caspar told MailOnline.
But Dr Caspar claims reptiles are ‘certainly not as dim-witted as is commonly believed’.
‘What Herculano-Houzel was insinuating was that it used tools to achieve these things and passed down acquired knowledge from one generation to the other,’ Dr Caspar added.


It’s undeniable that the Tyrannosaurus rex was a cunning animal given its ruthless hunting skills.

Nevertheless, a recent study demonstrates that the well-known dinosaur, which went extinct 66 million years ago, was not as intelligent as modern primates.

Scientists have refuted a neuroscientist’s assertion made last year that T. Rex had “baboon-like” cognitive capacities and could solve problems.

The contentious assertion, which was met with skepticism by the scientific community right away, has since been refuted.

Conversely, T. The researchers contend that Rex’s cognitive abilities were more akin to those of modern reptiles, like lizards and crocodiles.

Experts from the Universities of Bristol and Southampton, as well as other international behavioural scientists, neurologists, and palaeontologists, conducted the new study.

“The potentiality that T. Palaeontologist Dr. Darren Naish of the University of Southampton said, “The idea that a Tyrannosaurus Rex could have been as smart as a baboon is both fascinating and terrifying, and it has the potential to completely change our understanding of the past.”.

Yet as our analysis demonstrates, the evidence we have refutes this theory completely.

What’s even more fascinating is that they resembled intelligent giant crocodiles. “.”.

The Brazilian neuroscientist Dr. Suzana Herculano-Houzel’s study from the previous year examined T. study the brains of dinosaur progeny, such as extant birds, and examined T. rex skulls.

T, she estimated. With 3.2 billion neurons in his brain, Tyrannosaurus Rex had an exceptionally large brain compared to baboons’ 2.8 billion neurons.

Neurones, also referred to as nerve cells, are electrically excitable cells that send signals throughout an animal’s body.

Neurons transmit electrical and chemical signals between various parts of the brain and body, facilitating activities such as eating, walking, and thinking.

As the number of neurons generally corresponds to brain size, a T. Large brain cavities in Rex skeletons would have resulted in larger brains and more neurons.

Researchers have also found evidence linking an animal’s neuron count to its intelligence, which leads them to propose that T. Rex would have been capable of problem-solving, making useful tools, and even exhibiting cultural behaviors.

She tweeted with excitement, writing: “T.”. With a brain neuron count comparable to that of a baboon, Tyrannosaurus Rex possessed the ability to create tools, solve problems, and live for up to 40 years—long enough to establish a culture!

“It turned out that reality was scarier than the movies!”.

The methods she employed to estimate the size of the brain and the number of neurons in dinosaur brains were examined in greater detail for this new study.

The amount of neurons in dinosaur brains and other preconceived notions about brain size were shown to be inaccurate.

Instead of 3 billion neurons, they claim that there were, at most, 1/7 billion, and most likely much fewer.

Our internal computations indicate that the T. The maximum number of neurons in the rex forebrain was 11.7 billion, according to study author Dr. Kai Caspar of Heinrich Heine University in Germany, who spoke with MailOnline.

However, we believe that estimates of 250–350 million neurons are more plausible. ‘.

According to Dr. Caspar, the 2023 study has a “great number of issues.”.

Crucially, it makes the assumption that dinosaur brains like T. Rex told MailOnline, “It filled the entire cavity of the braincase.”.

“This is true for mammals like us and birds, but not for reptiles, whose brains occupy only 30 to 50 percent of the skull cavity.”.

A highly inconsistent dataset was produced by the 2023 study, which also used estimates of dinosaur brain and body mass from a variety of, sometimes incompatible, sources. ‘.

The researchers also challenge the notion that an animal’s intelligence increases with the number of neurons in its brain.

Neuron counts are frequently poor indicators of a species’ performance, despite the fact that this may seem obvious, Dr. Caspar told MailOnline.

Pigeon brains only contain a small percentage of monkey brains’ neurons, but pigeons have been demonstrated to function on par with monkeys in areas like short-term memory and quantity discrimination. ‘.

The expert continued, “scientists are still struggling to understand what gives rise to behavior that ‘we might want to call intelligent.”.

Reptiles, according to Dr. Caspar, are “certainly not as dim-witted as is commonly believed,” however.

“The experimental data we have points to many cognitive similarities between them, mammals and birds,” he said, “and their behaviors can be very complex.”.

Therefore, while it is not reasonable to presume that T. rex was undoubtedly a highly developed animal with behaviors akin to those of a monkey. “.

I. T. In order to successfully court mates, subdue defensive prey, and locate suitable nesting sites, Rex was able to “solve the problems that were relevant to it.”.

Dr. Caspar continued, “Herculano-Houzel was implying that it used tools to accomplish these things and passed down acquired knowledge from one generation to the next.”.

We just don’t have any evidence for this. ‘.

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