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Remains of the most recently discovered early human species, Homo floresiensis (nicknamed 'Hobbit'), have been found between 95,000 and 17,000 years ago on the Island of Flores, Indonesia. H. floresiensis individuals stood approximately 3 feet 6 inches tall, had tiny brains, large teeth for their small size, shrugged-forward shoulders, no chins, receding foreheads, and relatively large feet due to their short legs. Despite their small body and brain size, H. floresiensis made and used stone tools, hunted small elephants and large rodents, coped with predators such as giant Komodo dragons, and may have used fire.

The diminutive stature and small brain of H. floresiensis may have resulted from island dwarfism-an evolutionary process that results from long-term isolation on a small island with limited food resources and a lack of predators. Pygmy elephants on Flores, now extinct, showed the same adaptation. The smallest known species of Homo and Stegodon elephant are both found on the island of Flores, Indonesia. However, some scientists are now considering the possibility that the ancestors of H. floresiensis may have been small when they first reached Flores.

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Insular dwarfism, a form of phyletic dwarfism,[1] is the process and condition of the reduction in size of large animals over a number of generations[a] when their population's range is limited to a small environment, primarily islands. This natural process is distinct from the intentional creation of dwarf breeds, called dwarfing. This process has occurred many times throughout evolutionary history, with examples including dinosaurs, like Europasaurus, and modern animals such as elephants and their relatives. This process, and other "island genetics" artifacts, can occur not only on traditional islands, but also in other situations where an ecosystem is isolated from external resources and breeding. This can include caves, desert oases, isolated valleys and isolated mountains ("sky islands"). Insular dwarfism is one aspect of the more general "island rule", which posits that when mainland animals colonize islands, small species tend to evolve larger bodies, and large species tend to evolve smaller bodies.

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A diminutive species of human whose remains were found on the Indonesian island of Flores could have shrunk as a result of island dwarfism as it adapted to its environment.

A study of the remains of the creature, nicknamed the "hobbit", shows that it is possible for it to have been a dwarf version of an early human species.

The hobbit co-existed with our species until 12,000 years ago.

The research has been published in the Royal Society's Proceedings B Journal.

Since its discovery in 2003, researchers have struggled to explain the origins of these metre-high, tiny-brained people, known scientifically as Homo floresiensis.

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