Monograph: Graphical refinement of the conodont database: examples and a plea

An example from the North American Ordovician is used to contrast temporal and geographical scales developed biozonally and graphically. Other biostratigraphical studies that involve data assembled graphically are cited, and a plea is directed to students of conodonts to assemble and evaluate their data graphically, or at least to present the data in a form that can be used by others.