They have now uncovered several 190-million-year-old dinosaur embryos, the oldest ever found.
All previous dinosaur embryos have been from the Cretaceous period, which ended 65 million years ago.
Her control room contains jars of preserved dinosaur embryos.
They remain the oldest dinosaur embryos ever found.
The oldest dinosaur embryos ever discovered were found in the park in 1978.
So in fact, Hammond must have been growing thousands of dinosaur embryos to get a single live birth.
But he noted that other dinosaur embryos, found in China, were not accompanied by any shell remains.
If this is confirmed by further analysis, it would be the earliest dinosaur embryo ever found.
Only six or seven other dinosaur embryos are known to science, and none is as exquisitely preserved as this one.
The most celebrated recent addition to the museum's collection is a dinosaur embryo found preserved inside a fossil egg.