Homalonotidae

Homalonotidae is a family of trilobites that lived from the Ordovician to the Devonian.

They are characterised by a shovel-like cephalon (head), and are closely related to the family Calymenidae.

[1] It contains the following genera:[2]

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Reconstruction of Trimerus delphinocephalus , the exoskeleton of which was probably fringed with many sensory hairs called Setae .