Field Research (IMAGE) American Museum of Natural History Caption This isa field site near Belle Fourche, S.D., where the three specimens of Baculites (AMNH 55901,66253, 66267) were discovered and later scanned using Synchrotron X-ray microtomography. Credit Neil Landman Usage Restrictions None 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.