TY - GEN AU - Vendrasco, Michael J. AU - Checa González, Antonio G. AU - Heimbrock, William P. AU - Baumann, Steven D.J. PY - 2013 UR - https://hdl.handle.net/10481/95371 AB - Nacre was previously thought to be primitive in the Mollusca, but no convincing Cambrian examples are known. This aragonitic microstructure with crystal tablets that grow within an organic framework is thought to be the strongest, most... LA - eng PB - MDPI KW - Nacre KW - Ordovician KW - Isorthoceras TI - Nacre in Molluscs from the Ordovician of the Midwestern United States DO - 10.3390/geosciences3010001 ER -