An ancient marine reptile was pregnant with twins when she died, according to fossilized remains of an ichthyosaur from the [ ...

Xiphactinus was one of the largest bony fish of the Late Cretaceous and is considered one of the fiercest creatures in the sea. A powerful tail and winglike pectoral fins shot the 17-foot-long (5 ...

Sea levels were higher ... and other important creatures from lower trophic levels. In addition to spotlighting this one incredible Cretaceous community, the study's authors say their work should ...