Treatise Online publishes chapters prepared for parts of the Treatise on Invertebrate Paleontology as they are ready, rather than waiting for an entire hard copy Treatise volume to be printed. Chapters from the following Treatise parts are completed, nearing completion, or in preparation: Part B (protista), Part E (hypercalcified sponges), Part F (Cnidaria), Part G (bryozoans), Part J (paleozoic gastropoda), Part L (ammonoids), Part M (coleiods), Part N (bivalves), Part P (chelicerates), Part R (decapods), Part T (crinoids), Part V (graptolithines).

Printing of the hard copy Treatise volumes will continue as usual, with the opportunity for updating chapters published in the Treatise Online before going to press. Additional information about the Treatise on Invertebrate Paleontology can be found here: http://paleo.ku.edu/treatise2/treatise.html

Announcements