''Cornuproetus'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

trilobite Trilobites (; meaning "three-lobed entities") are extinction, extinct marine arthropods that form the class (biology), class Trilobita. One of the earliest groups of arthropods to appear in the fossil record, trilobites were among the most succ ...

in the family

Tropidocoryphidae Tropidocoryphidae is an extinct family of trilobites in the order Proetida Proetida is an order of trilobite that lived from the Ordovician to the Permian. It was the last surviving order of trilobite, dying out in the Permian-Triassic extinct ...

. Cornuproetus lived 390-360 MYA in the Devonian period. Cornuproetus possessed two long genals, which protruded from its Cephalon. It also had two eyes on its Cephalon. The remains of Cornuproetus are commonly found throughout North America, Africa, and Europe. https://www.univers-fossile.com/en/blog/cornuproetus-cornutus-fascinating-trilobite-species-fossil-enthusiasts-600.html?id_lang=2

References

Proetida genera Extinct animals of Europe Paleozoic life of Nunavut {{Proetida-stub