<em>Nipponosaurus</em> Thighbone (IMAGE) Hokkaido University Caption This is a cross section of a thighbone of Nipponosaurus (A) with an enlarged photo of the rectangular area (B). The latter shows the changing directions of the vascular canals. Credit Takasaki R., et al., <em>Historical Biology</em>, May 5, 2017 Usage Restrictions This image is copyrighted and can be used for reporting this press release if properly credited. 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.