''Obelagnostus'' 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

Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. ...

. It was described by Shergold and Webers in 1992, and the type species is ''Obelagnostus imitor''.Available Generic Names for Trilobites
P.A. Jell and J.M. Adrain.

References

Agnostidae Trilobites of Antarctica Agnostida genera {{agnostida-stub