''Trimerus'' is an extinct genus of trilobite in the family
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.
It contains the following genera:
*'' Arduenne ...
. There is one described species in ''Trimerus'', ''T. dekayi''.
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References
Homalonotidae
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