Dino with a ‘perfect and unique’ asshole also had the oldest belly button known to science

Paleontologists have discovered the oldest navel known to science – and the first ever found on a non-avian dinosaur – on a 125 million-year-old fossil of a parrot-beaked biped in China.

The faint navel mark belongs to a reptile of the genus Psittacosaurus, which lived during the Cretaceous period (145 to 66 million years ago). Scientists spotted the long, thin trace of an umbilical scar when they exposed the fossil to a concentrated beam of laser light. The scar is a slight misalignment of the pattern of skin and scales on the dinosaur abdomen and is the reptile equivalent of a mammalian navel.

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