''Micragnostus'' is a genus of

trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ...

in the order

Agnostida Agnostida is an order of arthropod 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 Artiopoda. They a ...

, which existed in what is now north

Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...

. It was described by Howell in 1935, and the type species is ''Micragnostus calvus'', which was originally described as a species of ''

Agnostus ''Agnostus'' is a genus of agnostid trilobites, belonging to the family Agnostidae, that lived during the late Middle Cambrian – early Upper Cambrian (about 506 to 492 million years ago). It is the type genus of the family Agnostidae and is sub ...

'' by Lake in 1906.Available Generic Names for Trilobites
P.A. Jell and J.M. Adrain.

References

Agnostidae Trilobites of Europe Paleozoic life of Alberta Paleozoic life of Newfoundland and Labrador Paleozoic life of Yukon {{agnostida-stub