This blog post is part of a series from Smithsonian Libraries highlighting Unearthed, a new collection of paleobiology literature in Biodiversity Heritage Library curated by Smithsonian Libraries in celebration of the opening of the National Museum <a href="https://blog.library.si.edu/blog/2019/10/10/unearthed-digging-in-to-vertebrate-paleontology/#more-'" class="more-link">more »</a>