Look at the fossilized dinosaur navel, scientists have found it for the first time

Dinosaur embryos were not attached to the umbilical cord, their body was connected to the yolk sac of their egg.

through the slit-like abdominal opening. From this incision formed a long, thin umbilical scar, which remained on their abdomen throughout their lives.

Photo of the navel

In humans and other mammals, the navel is the scar that remains where the umbilical cord was connected to the fetal body.

The authors of the study used a new method,called Laser Stimulated Fluorescence (LSF) Imaging, and found such a navel scar on the fossilized skin of a dinosaur. It was a psittacosaurus 130 million years old: a herbivore 2 m long lived in the territory of modern China in the Cretaceous period.

The team said they used LSF imaging and identified the characteristic scales that surrounded the long umbilical scar in Psittacosaurus. Scientists have called this type of scar the navel.

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