A new fossil of Guizhouichthyosaurus, a 5-m- (16.4-foot) long ichthyosaur that swam in Middle Triassic oceans some 240 million years ago, contains the remains of the 4-m- (13.1-foot) long thalattosaur Xinpusaurus xingyiensis, according to new research led by paleontologists from the University of California, Davis and Peking University. The work could be the oldest direct evidence that Triassic marine reptiles like ichthyosaurs — previously...
