Not sure what a "taxon" is? Have trouble remembering the difference between "holotype" and "paratype"? Ever wonder what experts mean when they say ridiculously long words like "prezygapophysis"?

This on-line glossary is an attempt to catalogue the definitions of words related to the study of dinosaurs. It will be an on-going process. Please contact the author if you know of any words which should be here, but aren't.