''Kymagnostus'' is a genus of

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 ...

s in the order

Agnostida Agnostida are an order of extinct arthropods which have classically been seen as a group of highly modified trilobites, though some recent research has doubted this placement. Regardless, they appear to be close relatives as part of the Artiopod ...

, which existed in what is now

Arkansas Arkansas ( ) is a landlocked state in the West South Central region of the Southern United States. It borders Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, Texas to the southwest, and Oklahoma ...

, United States. It was described by Hohensee in 1989, and the type species is ''Kymagnostus harti''.Available Generic Names for Trilobites
P.A. Jell and J.M. Adrain.

References

Agnostidae Fossils of the United States Agnostida genera {{agnostida-stub