This is because of both the relatively large fetal head circumference and the mother's relatively narrow pelvis.

It had a long, narrow pelvis and a pubis which resembled those possessed by more advanced ornithischians.

Jean-Paul Pascal was a handsome muscular young man with a narrow pelvis who easily adapted himself to the cowboy look that the French admire.

Allotheres also had a narrow pelvis, indicating that they gave birth to tiny helpless young like marsupials do.

Jean-Paul heaved and thrust, panting now, holding the boy's beautiful narrow pelvis tight between his hands.

Many of his writings (e.g. the narrow pelvis, inflections of the uterus, on hematometra, et al) were articles published in the Prague Quarterly journal.

It was possible to bypass the narrow pelvis and birth obstructions by caesarean section, as in sing time as chief of Bergen no longer always a dangerous choice.

Thirty-three Delta females, long-headed, sandy, with narrow pelvises, and all within 20 millimetres of 1 metre 69 centimetres tall, were cutting screws.

A narrow pelvis contributes to speed since the horse can get its hind legs well under its body to develop thrust.

Stenopelix (meaning "narrow pelvis") is a genus of small ornithischian dinosaur from the Early Cretaceous of Germany.