Some Special Morphological Terms
last revised 01 July 2007 by S. M. Gon III

In addition to the standard terms for the typical dorsal morphology of trilobites, there are some terms that are used to describe features that are specific to certain orders and/or suborders. Often, these are terms used because of distinguishing variations in form. For example, the glabellar lobes of Lichida do not show simple lateral furrows and lobes, but are typically fused into central and lateral lobes.  Below are some examples of special terms applied to certain trilobite groups. Click on each image for more information on that group.

Some morphological terms
applied to Order Harpetida

My tropidium hurts!
Walking Trilobite animation ©2000 by S. M. Gon III