As reported by Smithsonian:
The unfortunate mother’s remains were found face-up in a stone grave, suggesting that she had been deliberately buried. Analysis by scientists at the University of Ferrara and University of Bologna revealed that the woman was between 25 and 35 when she died. Her fetus, whose gender could not be determined, appeared to have reached the 38th week of gestation, making it just two weeks shy of full term.
According to Gizmodo’s George Dvorsky, the baby’s legs were still inside its mother, but the head and upper body appeared to have been born after she died. The authors of the study suggest that the burial offers a rare example of “post-mortem fetal extrusion,” or “coffin birth,” which occurs when gases build up inside of the body of a deceased pregnant woman and force the fetus out of the birth canal. This gruesome phenomenon has only infrequently been observed in the archaeological record.The skull also showed a hole consistent with trepanation with partial healing (the Smithsonian article suggests she may have had seizures from preeclampsia).