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Previously it was believed that this animal was vertebrate, but a recent study has revealed otherwise
The scientific community does not agree on an animal found in 1950 by an antique collector, named Tully.
A study published in Proceedings of the Royal Society B: Biological Sciences, which was led by doctors Chris Rogers and Maria McNamara of University College Cork with an international team of scientists from the United Kingdom, the United States and Japan, refuted the theory that He knew about this animal, that is, that his body possessed a spine, but rather looks like an octopus or squid.
This discovery has baffled scientists, since fossils were discovered 60 years ago.
In 2016, a study found that Tully had a rigid rod of cartilage that supported her body and gills, which suggested that the creatures were vertebrate predators, similar to some primitive fish. However, researchers now believe that this was not the case after studying the chemicals present in the animal’s eyes.
With the help of a particle accelerator to determine the proportions of elements in the eyes of modern vertebrates and invertebrates, they were able to establish a comparison with the ancient Tullimonstrum.
It was then that they discovered that the arrangement of melanosomes in the eyes of the prehistoric animal was more similar to that of modern invertebrates than that of vertebrates.
Rogers, who led the study, wrote in The Conversation: “The chemistry of Tully’s eyes and the ratio of zinc to copper was more similar to that of invertebrates than vertebrates.”
“This suggests that the animal may not have been a vertebrate, which contradicts previous efforts to classify it,” he said.
However, the research team also discovered that the fossil’s eyes contained a different type of copper than the modern invertebrates they studied, leaving them unable to classify it. “
Dr. Rogers added: “While our work adds weight to the idea that Tully is not a vertebrate, it does not clearly identify it as an invertebrate.”
Source: el nuevo dia