Homalonotus Temporal range: Late Ordovician-Middle Devonian ~460–383 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Homalonotus dekayi
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Order:	Phacopida
Suborder:	Calymenina
Family:	Homalonotidae
Genus:	Homalonotus König, 1825, non Homalonotus Agassiz, 1846 = Homalinotus Schoenherr 1826, a beetle of uncertain affiliation[1]
Species
H. armatus H. dekayi H. delphinocephalus H. expansus H. platynotus H. rhinotropis H. roemeri

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.^{[2][circular reference]}.

Fossils of Homalonotus have been found in:^[3]

Ordovician

France, and the United Kingdom

Silurian

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

Devonian

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

• Cooper, Michael R. A Revision of the Devonian Trilobita from the Bokkeveld Group of South Africa. Cape Town: South African Museum, 1982.
• Salter, John William; Sedgwick, Adam; and Morris, John. A Catalogue of the Collection of Cambrian and Silurian Fossils Contained in the Geolological Museum of the University of Cambridge. Cambridge: University Press, 2010.