Since its inception in the late 1940s, the aim of the Treatise on Invertebrate Paleontology has been to present a comprehensive and authoritative yet compact statement of knowledge concerning groups of invertebrate fossils. Professor Raymond C. Moore, the project's founder, envisaged the Treatise as ultimately comprising three hefty volumes with a total of some 3,000 pages. The Treatise, expanding in fifty years beyond Moore's wildest dream, now comprises 49 volumes and involves the work of more than 300 authors worldwide with another dozen or so volumes in various stages of preparation.

Click here for information about the latest Treatise volume: Part H, Brachiopoda,vol.6.

In the near future the Treatise will be online in the form of a searchable database allowing authors to cooperatively share in the production of Treatise volumes.