NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY
Florissant Formation insect fossil. Fossil of Petrolystra gigantea, a froghopper insect, from the Florissant Formation. This fossil bed, in Colorado, USA, dates to the Eocene some 34 million years ago. A volcanic eruption created conditions ideal for fossil formation, and thousands of fossils of extinct insects and plants have been found here. This specimen is part of the collections held in the Palaeontology Department of the Natural History Museum, London, UK.
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