Evolution is a very long process of hundreds of millions of years of changes, improvements, and almost imperceptible leaps that are happening and that living organisms go through without realizing it and without any type of control over it.
One of the elements of our modern organism that most impresses scientists is the connections between the eyes and the brain, a very complex branch of nerves that allow us to process light in various ways, converting them into images that our brain then manages to process in a coherent way.
Scientists Discover Optic Nerve In Prehistoric Fish That Could ‘Change Textbooks’
Scientists believed that these nerves had developed in some animals around 350 million years ago, but recent discoveries indicate that these connections were already present in some fish that lived at least 100 million years before that.
“It’s the first time for me that one of our publications literally changes the textbook that I am teaching with,” said Ingo Braasch, an assistant professor in the Department of Integrative Biology in the College of Natural Science, as quoted by Sci-Tech daily.
It was believed that these nerves had developed in animals that were already walking on land, but it was proven that before leaving the water, some creatures already had some primitive capacity for vision similar to ours.
The most impressive thing about the discovery is that modern fish do not have these nerve connections from the eyes to the brain, this is why scientists did not imagine that these capacities had been developed in the sea. This means that the animals that developed these nerve connections were what had the offspring that would later come out of the water and are probably our direct ancestors.
Scientists claim that discoveries like these and their implications not only change our way of understanding the evolutionary past of all species on our planet but are also of great contribution to modern medicine. That’s because the models made of ancient animals that relate to us allows doctors to better understand how our body works.
The discovery literally changes history and we are now excited to know at least a little more about our origins and hope that scientists continue to find more clues.