Palaeontographica Americana (ISSN 0078-8546) was an occasional publication published by PRI published between 1916 and 2012. It was originally conceived as a large-format (9.5 x 12.5”) serial with high-quality, glossy illustrations in the days when Bulletins of American Paleontology was smaller in format (6 x 9”) and non-glossy. In the 1980s, both journals migrated to 8.5 x 11” format with glossy images, blurring the distinction between the two. After several years of inactivity, PA formally discontinued publication effective January 2013.
Back issues of PA are available by single-issue purchase. Most issues published between 1966 and 1998 (nos. 6-60) are now also available as open access documents in the Biodiversity Heritage Library. Earlier volumes were sold to the now-defunct Johnson Reprint Corporation in 1962; although some of Johnson’s titles were assumed by Periodicals Service Company, this does not seem to have included PA, therefore nos. 1-5 are presently unavailable.