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Rare Dinosaur Mummies Unveiled: Skin and Spikes Preserved

10/30/2025

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Summary

Story summary

Paleontologists at the University of Chicago reexamined Edmontosaurus annectens fossils discovered in Wyoming more than a century ago.
They found that the fossils are preserved as dinosaur mummies with intact skin, spikes, and hooves.
The study identifies a juvenile specimen as the first subadult dinosaur mummy, measuring about 20 feet.
An adult specimen, about 40 feet long, showcases the complete spike row and wedge-shaped hooves, highlighting soft tissue preservation.

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Story summary

Paleontologists at the University of Chicago reexamined Edmontosaurus annectens fossils discovered in Wyoming more than a century ago.
They found that the fossils are preserved as dinosaur mummies with intact skin, spikes, and hooves.
The study identifies a juvenile specimen as the first subadult dinosaur mummy, measuring about 20 feet.
An adult specimen, about 40 feet long, showcases the complete spike row and wedge-shaped hooves, highlighting soft tissue preservation.