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Greg Edgecombe Using sophisticated imaging technology on these amber fossils, palaeontologists can study tiny arthropod brains in 3D at minuscule scales. However, the oldest arthropods in amber only extend back to the Triassic Period (around 230 million years ago). Burgess Shale-type deposits are much older, being Cambrian in age (typically 500 to 520 million years old). They contain an abundance of exceptionally preserved marine arthropods. These fossils are very important as they represent what are unmistakably some of the oldest animals, and can therefore inform us on their origins and earliest evolutionary history. Their remains are primarily preserved as carbon films in mudstone.

United statesJavier ortega hernCharles darwinJohn patersonGreg edgecombeHarvard universityAustralian research councilNational science foundationThe originJurassic parkTriassic periodBurgess shale typeAmazon creekAustralian researchஒன்றுபட்டது மாநிலங்களில்ஜேவியர் ஆர்டேகா ஹெர்ன்