This jackpot fossil was recovered from the Green River Formation in Rio Blanco County, Colorado.
Heads, who is also the director of the Prairie Research Institute’s Center for Paleontology, added: “But perhaps the most striking feature of this fossil is the really exceptional, remarkable preservation of internal organs – organs that you just don’t see in fossils.
The researchers examined the internal anatomy of many dissected katydid specimens from the same genus to confirm their findings. And their observations of the preserved soft tissues were validated.genus today includes katydids with strange thread-like legs. The discovery of this fossil will be useful to fill in the evolutionary gaps about the physical structure of this group of insects.
“Obviously, having a fossil species of a modern genus is really significant because it confirms the antiquity of this lineage,” Heads said. “Now we know that about 50 million years ago, this genus had already evolved and already had a morphology that mimics the grass in which it lives and hides from predators.”Orthoptera are abundant and diverse in the lower–middle Eocene Green River Formation of the Piceance Basin in northwestern Colorado, though remain almost entirely unstudied.
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