This means that the Palaeolithic (Ice Age) cave art - including pictures of animals, dots and geometric signs - must have been made by Neanderthals, a 'sister' species to Homo sapiens, and Europe's sole human inhabitants at the time.
It also indicates that they thought symbolically, like modern humans.
"The emergence of symbolic material culture represents a fundamental threshold in the evolution of humankind.
It is one of the main pillars of what makes us human," he said.
She also managed, sang and played percussion with nine piece band Atlantico.
Just days after Ms Maguire's death police were called to the bridge after reports of concern for the welfare of a man on Monday evening.
According to the researchers, creating the art must have involved such sophisticated behaviour as the choosing of a location, planning of light source and mixing of pigments.
Alistair Pike, Professor of Archaeological Sciences at the University of Southampton and co-director of the study, said: "Soon after the discovery of the first of their fossils in the 19th century, Neanderthals were portrayed as brutish and uncultured, incapable of art and symbolic behaviour, and some of these views persist today.
Campaigners are calling for authorities to help "save not just one, but dozens of lives each year".
Study co-author Paul Pettitt, of Durham University, commented: "Neanderthals created meaningful symbols in meaningful places. "We have examples in three caves 700km apart, and evidence that it was a long-lived tradition.
It is quite possible that similar cave art in other caves in Western Europe is of Neanderthal origin as well." ### The research was supported by the Natural Environment Research Council, the National Geographic Society, the Max Planck Society, and a Royal Society Wolfson Research Merit Award. are not responsible for the accuracy of news releases posted to Eurek Alert!
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