''Paraliliaspis egregia'' is an extinct cyathaspidiform heterostracan

agnatha Agnatha (; ) or jawless fish is a paraphyletic infraphylum of animals in the subphylum Vertebrata of the phylum Chordata, characterized by the lack of jaws. The group consists of both extant taxon, living (Cyclostomi, cyclostomes such as hagfish ...

n from early

Devonian The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...

marine strata of the

Ural Mountains The Ural Mountains ( ),; , ; , or simply the Urals, are a mountain range in Eurasia that runs north–south mostly through Russia, from the coast of the Arctic Ocean to the river Ural (river), Ural and northwestern Kazakhstan.

. ''Paraliliaspis'' was, at various times, placed in the families Cyathaspididae, and Anglaspididae. Currently, it is placed in Ariaspidae with ''

Ariaspis ''Ariaspis'' is an extinct genus of cyathaspidiform heterostracan agnathan. Fossils are found in marine strata of Canada and Europe from the late Silurian period until its extinction during the Early Devonian The Devonian ( ) is a period ...

'', and '' Listraspis'', and is considered to be closely related to the similar-looking '' Liliaspis'', which is also from Early Devonian Ural marine strata. ''Anglaspis'' is considered the ancestor or sister-taxon of both ''Liliaspis'' and ''P. egregia''.

References

Cyathaspidiformes genera Early Devonian fish of Europe Cyathaspidida {{Pteraspidomorphi-stub