Example of Thick Bark in North America (IMAGE) Princeton University Caption Iconic species such as the redwood (Sequoia sempervirens) contain thick bark. Credit Photo courtesy of Adam Pellegrini. Usage Restrictions Photo courtesy of Adam Pellegrini. 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.