Homalonotus

Homalonotus is an extinct genus of trilobites in the order Phacopida. It contains several species, including H. armatus and H. roemeri. It is closely related to other trilobites such as Arduennella and Dipleura. .

Distribution
Fossils of Homalonotus have been found in:

France, and the United Kingdom
 * Ordovician

Canada (Nova Scotia), Poland, Sweden (Gotland, Västergötland), the United Kingdom, and the United States (New York)
 * Silurian

Algeria, Bolivia, Brazil, Uruguay, Colombia (Floresta Formation, Altiplano Cundiboyacense), France, Morocco, New Zealand, Poland, and Ukraine
 * Devonian