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Kangaroo painted over 17,000 years ago is Australia's oldest known rock art, scientists say

February 22, 2021. Summarized by summa-bot.

Compression ratio: 62.3%. 2 min read.

The kangaroo painting is Australia's oldest known example of rock art, according to scientists.

A painting of a kangaroo in Western Australia is the oldest known rock art in the country, according to scientists, who say radiocarbon-dating analysis shows it was created more than 17,000 years ago.

The kangaroo depiction was among a number of rock paintings first recorded by researchers in the 1990s in the Kimberley region, which holds one of the world's largest collections of indigenous rock art.

Art painted on rocks are some of the earliest recorded attempts at human communication, with some of the oldest examples of animal depictions found in Sulawesi, Indonesia.

However, it has proven a challenge to date paintings older than 6,000 years, since organic material in the paint pigment -- which is crucial for radiocarbon dating -- is hard to find.

They found the remains of 27 ancient mud wasp nests -- which can be radiocarbon dated -- above and below 16 different rock paintings, according to the paper.

The strategy is simple: if the nests are built on top of the rock art, the art must be older.

If the art is built on top of nests, the nests must be older.

Dating these nests thus give scientists a minimum and maximum age for the rock paintings.

By dating the wasp nests, the authors of this study established that the majority of paintings were produced between 17,000 and 13,000 years ago.

The kangaroo painting was dated to between 17,100 and 17,500 years ago.

It was painted on the sloping ceiling of a rock shelter, home to thousands of fossilized mud wasp nests.

This study is part of the larger multidisciplinary Kimberley rock art dating project, which uses several different technologies to study the evolution of rock art and the natural landscape.

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