Most articles I'm seeing are about a month and a half old, but this was technically discovered in 2018, so here's hoping this isn't a duplicate post. Just thought it was cool af tbh.

An agate was mistakenly placed into the Natural History Museums' mineralogy collection but is now considered a 67 million-year-old titanosaur egg.

This little specimen was found in a volcanic plain and was smothered in lava after being laid. Evidence from the thin outer shell indicates that it was once pressed against other eggs (probably in a nest) and buried under volcanic rock before it was encased in lava. Burying their eggs was a nesting behavior consistent with Titanosaurs since they could use the geothermal heat to incubate their eggs, this is also common among modern turtles, crocodiles, and

Once the embryo had died, over the course of millions of years silica-rich water seeped into the egg, crystalizing into the pinkish agate pictured above.

It wasn't until Robin Hansen, a mineral curator at the Natural History Museum, visited a mineral show in 2018 that he realized the agate stored at the museum looked pretty similar to another agatized dinosaur egg that was on display.

Thoughts? I love learning about dinosaur nesting habits tbh, it's the coolest thing.