Ammonites (IMAGE) American Museum of Natural History Caption This is a fossiliferous concretion containing a large macroconch of Hoploscaphites brevis, Inoceramus nebrascensis and Baculites cuneatus . This fossil, collected as AMNH 63467, was found in the Baculites cuneatus Zone, Pierre Shale, Meade County, South Dakota. Credit S. Thurston/AMNH 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.