Trilobitomorpha
From Wikipedia, the free encyclopedia.
The Trilobitomorpha are a subphylum of arthropods, including the trilobites. Originally a variety of peculiar forms, mostly from the lower Cambrian, were included as a class Trilobitoida. However these do not appear to be closely related to the trilobites or to each other, and are now generally placed in separate subphyla when given definite classifications at all.
