Following are lists of notable papers from the AAPG Bulletin. A notable paper may mean different things to different people, such as a new scientific breakthrough in a particular discipline, a new technology, an evaluation of a major petroleum province, first reporting of the geology of a new discovery, or a paper’s level of download activity or citation level. Citation levels for peer-reviewed scientific papers are a measure of how many times a paper is referenced in another publication. A number of organizations provide such compilations. Our notable papers list is based in part on a review of citation counts three years after publication of the paper. The Bulletin Editorial Board compiled this list based on a review of many sources. Future notable AAPG Bulletin papers lists will be posted in the first quarter of the year. For more information on citation indices, refer to Thomson Reuters' Web of Science or Wikipedia.