Skip to content
Riot Fest
Tickets
Search
  • 2026 EARLY BIRD TICKETS
  • 2026 Festival
    • Tickets
    • Lineup
    • Payment Plans
    • Photos
    • FAQ
    • Hotels
    • Lockers
  • Merch
  • Upcoming Shows
  • Community
    • Beyond the Fest
    • Events
    • Community Tickets
    • Local Hiring
    • Park Cleanups
    • Vendor Workshop
    • Community Update
  • Search
The First-Ever Fossilized Dinosaur Butthole is Here and It’s Flawless, Says Science

The First-Ever Fossilized Dinosaur Butthole is Here and It’s Flawless, Says Science

January 26, 2021 (December 7, 2022) // Riot Fest

In what might already be the greatest scientific achievement of 2021, a team of scientists at University of Bristol have revealed their discovery of the world’s first preserved dinosaur butthole. The 100 million-year-old fossilized anus, described by paleontologists as “perfect” and “a one-of-a-kind opening,” is unique enough to provide brand new insights into the sexual lives and bowel functions of dinosaurs—in other words, a hole lot of exciting new stuff. (Sorry.)

The cloacal opening in question belonged to a Psittacosaurus, a dog-like dinosaur whose remains were encased mid-dump in a mix of deoxygenated mud and volcanic ash. The orifice is the first of its kind, as most dinosaur skin is “rare and often patchy,” according to Jakob Vinther, lead paleontologist at the University of Bristol.

Image courtesy of Jakob Vinther and Bob Nicholls

“It took a long while before we got around to finish [our research] because no one has ever cared about comparing the exterior of cloacal openings of living animals,” Vinther stated. “It was largely unchartered territory.”

It gets better. The pigmented colors of this dinosaur’s rear opening, according to Vinther and his fellow scientists, may have contained scent glands—similar to those of a crocodile’s—that signaled messages to other dinosaurs, like sexual interest. In other words, dinosaurs may have been stomping around the place flashing their buttholes at each other to flirt. If that isn’t the greatest scientific fact you’ll hear all year, I don’t know what is.


 

The Related Rabbit Hole

For a few million dollars, you can name your own dinosaur species If Dolphins Had Thumbs, They Would Probably Destroy Us All, Says Science Default ThumbnailDinosaur Jr. announces Euro tour, will have Kim Gordon play some songs with them
About The Author
Riot Fest

Punk Rock (& more) Music Fest | I'm sorry we didn't book the exact bands you wanted, in the exact order you wanted, in the exact location you wanted, for free. September 19-21, 2025.

Posted in RandomTagged Dinosaurs, news, poop, science

Post navigation

  Previous PostNext Post 
  • Instagram
  • Twitter
  • TikTok
  • YouTube
  • Facebook
  • Spotify
Riot Fest Tickets
Upcoming Shows Playlist
Riot Fest Presents Shows
Dec. 4, 2025
X-Ray Arcade
Cursive

Cursive

AJJ

Tickets(Opens in new window).
Cursive
Dec. 4, 2025
The Salt Shed Indoors (Shed)
Hot Mulligan

Hot Mulligan

Drug Church

Arm’s Length

Anxious

Low Tickets(Opens in new window).
Hot Mulligan
Dec. 5, 2025
The Salt Shed Indoors (Shed)
Hot Mulligan

Hot Mulligan

Drug Church

Arm’s Length

Anxious

Tickets(Opens in new window).
Hot Mulligan
Dec. 5, 2025
Metro Chicago
The Lawrence Arm’s 11th Annual War on X-Mas

The Lawrence Arm’s 11th Annual War on X-Mas

Samiam

Cadillac Blindside

Tickets(Opens in new window).
The Lawrence Arm’s 11th Annual War on X-Mas
Dec. 5, 2025
Sleeping Village
King Mala

King Mala

Tickets(Opens in new window).
King Mala
Dec. 6, 2025
X-Ray Arcade
Samiam

Samiam

Avenues

Hello Face

Tickets(Opens in new window).
Samiam

MORE SHOWS

Greatest Hits


  • Instagram
  • Twitter
  • TikTok
  • YouTube
  • Facebook
  • Spotify
  • Mail

NEWSLETTER — FAQ — CONTACT — HISTORY

InstagramTwitterYouTubeTikTokFacebook

Copyright © 2025 Riot Fest Corporation. Privacy Policy.

Search for:

Send me emails so I don’t have to go to your website anymore.