Researchers Identified Fossilized Feathers in Dinosaur Dung
A 2016 discovery in Montana revealed the first known hesperornithiform feathers inside a fossilized coprolite.
Updated on Oct. 8, 2026 in Bird Watching
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Paleontologists analyzing a 66-million-year-old coprolite from Montana discovered four preserved feathers alongside bird bone fragments. The findings represent the first instance of hesperornithiform feathers ever identified in the fossil record.
Why it matters
This discovery provides rare insight into the dietary habits of dinosaurs at the end of the Cretaceous period. Analyzing these remains may help scientists determine if plumage differences played a role in bird survival during the mass extinction event.
The specimen, discovered in 2016 at the Hell Creek Formation, contains a primary feather measuring 9.3 millimeters and leg-bone fragments of 18 and 12 millimeters. The feathers feature a distinct square shaft with a sponge-like center.
The players
David DeMar Jr.
A paleontologist who successfully identified the fossilized feather remains within the coprolite sample.
Current Biology
The scientific journal that published the research findings regarding the ancient feathers.
The details
Researchers utilized micro-CT and 3D surface scans to examine the contents of the coprolite, which originated from a dinosaur living 66 million years ago. Paleontologist David DeMar Jr. initially identified the rare feather remains using a hand lens.
Timeline
The dinosaur consumed the bird 66 million years ago during the late Cretaceous period.
The fossilized coprolite was discovered in 2016.
Culture Shift
This discovery challenges previous limitations in paleontological research by demonstrating that coprolites are high-value sources of anatomical data. It signals a broader shift toward re-examining existing museum collections with advanced imaging technology.
While this discovery focuses on ancient history, it underscores the importance of public museum collections for ongoing scientific research. Enthusiasts can better understand the significance of fossil preservation by viewing similar specimens in regional paleontology displays.
The takeaway
This finding proves that even the most mundane fossilized remains can harbor critical scientific breakthroughs when analyzed with modern scanning tools. Future research will likely focus on mining existing museum archives to find further evidence of prehistoric plumage.
Further reading
Learn more about the evolutionary history of avian ancestors in our Bird Watching section.
Source note: This article includes information reported by ZME Science.
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