Pilekiidae is a

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

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 ...

s in the order

Phacopida Phacopida ("lens-face") is an order of trilobites that lived from the Late Cambrian to the Late Devonian. It is made up of a morphologically diverse assemblage of taxa in three related suborders. Characteristics Phacopida had 8 to 19 thorac ...

, specifically within Suborder

Cheirurina Cheirurina is a suborder of the trilobite order Phacopida. Known representatives range from the uppermost Cambrian (upper Furongian) to the end of the Middle Devonian (Givetian The Givetian is one of two faunal stages in the Middle Devonian Pe ...

. It includes the following genera: *'' Anacheiruraspis'' *''

Anacheirurus ''Anacheirurus'' is a genus of trilobites. It was described by Reed in 1896, as a new genus for the species ''Cheirurus frederici'', and was originally described by Salter in 1864. Species * ''Anacheirurus asiaticus'' Petrunina, 1984 * ''Anacheir ...

'' *'' Chashania'' *''

Demeterops ''Demeterops'' is a genus of trilobites in the order Phacopida, that existed during the lower Ordovician in what is now the United States. It was described by Pribyl and Vanek in 1985, and the type species is ''Demeterops loella'', which was orig ...

'' *''

Emsurina ''Emsurina'' is a genus of trilobites in the order Phacopida, that existed during the upper Cambrian in what is now Russia. It was described by Sivov in 1955, and the type species is ''Emsurina sibirica''. The type locality was the Tolstochikhi ...

'' *'' Koraipsis'' *''

Landyia ''Landyia'' is a trilobite in the order Phacopida, that existed during the lower Ordovician in what is now Australia. It was described by Jell in 1985, and the type species is ''Landyia elizabethae''. The type locality was the Digger Island For ...

'' *''

Macrogrammus ''Macrogrammus'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Arenig, Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 4 ...

'' *'' Metapilekia'' *'' Metapliomerops'' *'' Parapilekia'' *'' Pilekia'' *'' Pliomeroides'' *'' Pseudopliomera'' *'' Seisonia'' *'' Sinoparapilekia'' *'' Victorispina''

References

Trilobite families {{phacopida-stub