The fossil's remarkable preservation has allowed for thorough investigations, including determining its breathing system.
research in the region a few years ago, Mallorcan researcher Josep Juárez made an unexpected discovery: a complete insect larva that had left a faint imprint of organic remains on the two sides, which were left exposed when the rock split in half.
The comprehensive analysis of the fossil had to wait, but when it was finally examined under a strong microscope, it became clear that it was a rare find. Detail of one of the preserved external breathing structures of the fossil, with arrows pointing to circular primary openings.The extremely well-preserved larva is from a family of insects called dipterans, which includes real flies,, midges, and gnats. The oldest dipteran ever discovered is this specimen, which dates to the early Middle Triassic and is 247 million years old—older than the earliest dinosaurs.
Thousands of fossil dipterans have been discovered worldwide in thinly stratified rocks and amber. Fossils discovered in France, around one to two million years younger than those from Estellencs, previously held the record.
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