Jaws of Smilodon fatalis (IMAGE) Royal Ontario Museum Caption A comparison of the lower left jaw bones from the two young sabre-toothed cats, S. fatalis, that were buried together. They show similar tooth formation, suggesting that the two were related. Comparison of the two left dentaries, ROMVP 5100 and ROMVP 5101. Credit Credit: Ashley Reynolds © Royal Ontario Museum Usage Restrictions For use with this news story only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.