The Neogene Marine Biota of Tropical America (NMITA) WWW Site contains images and information on taxa collected as part of two large multi-taxa fossil sampling programs: (1) the Panama Paleontology Project (PPP) coordinated by the Smithsonian Tropical Research Institute in Panama; (2) the Neogene Paleontology of the northern Dominican Republic (DR) project coordinated by the Natural History Museum in Basel, Switzerland. NMITA is designed for use in research and education in systematics and evolutionary paleontology. Partial information is currently available for bryozoans, corals (zooxanthellate and azooxanthellate), molluscs (gastropods and bivalves), ostracodes, and fish. Users may click on taxa to receive conventional taxonomic information on authorship, synonyms, morphology, type specimens, and spatial and temporal distribution. Alternatively they may click on maps and stratigraphic columns to receive faunal lists for specific horizons. The NMITA database and web servers are located in the Department of Geoscience at the University of Iowa. The fossil collections are housed at the U.S. National Museum of Natural History (NMNH) of the Smithsonian Institution in Washington, D.C. and at the Natural History Museum in Basel, Switzerland (NMB). For details about the current status of collections and specimens, see the homepage for each individual taxonomic group.