Homalonotidae


Homalonotidae is a family of trilobites that lived from the Ordovician to the Devonian. They are characterised by a shovel-like cephalon, and are closely related to the family Calymenidae.
It contains the following genera:
File:TrimerusDelphinocephalus.jpg|left|thumb|Reconstruction of Trimerus delphinocephalus, the exoskeleton of which was probably fringed with many sensory hairs called Setae.