A hunt gone wrong (IMAGE) North Carolina State University Caption Artistic reconstruction of Otodus megalodon feeding upon an ancient swordfish ~11 - 3.7 million years ago. A puncture injury to the tooth gum such as this may have caused gemination of the developing tooth buds. Credit Image: Jorge Gonzalez Usage Restrictions Use with credit. License Original 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.