Plutonides

Plutonides is a genus of Middle Cambrian trilobite in the family Paradoxididae with species Plutonides sedgwickii and possibly Plutonides? illingi. Several other species and subspecies were at times placed in "Plutonides" but have subsequently been moved to other genera.
In terms of the Scandinavian Middle Cambrian sequence the genus ranges from the "Baltoparadoxides oelandicus" Biosuperzone ("B. pinus" Biosubzone) at the type locality for "P. sedwickii" on Trwyncynddeiriog headland located south-southwest of St David’s Cathedral and east of Porth Clais Harbour - Pen-y-Cyfrwy Member, Newgale Formation, and possibly to middle part of the "Mawddachites hicksii" Biozone on the Penpleidiau (eastern) Headland of Caerfai Bay south of St David’s in southwest Wales, where "P? illingi" occurs [Locs. TC-1 & CF-1 of Rees "et al."] 
Type.
"Plutonia sedgwickii" is the type species for the genus and was first described in 1871 as ""Plutonia" sedgwickii". However the genus name "Plutonia" had already been used for the Vitrinidae snail genus "Plutonia" by Morelet (1864), and so the new genus "Plutonides" was coined by Hicks (1895). The species Lectotype is SM A1086, an internal mould of cranidium, .
Species.
"Paradoxides" cf. "sedgwickii", described by Smith and White (1963) from the "Baltoparadoxides pinus" Biosubzone in the upper part of the Purley Shale Formation of Warwickshire, central England was redescribed by Rushton (1966, p. 42, pl. 6, figs. 1-10) as ‘"Paradoxides"’ "sedgwickii porphyrus". The subspecies has broader palpebral lobes and finer surface granulation than seen in other "P. sedgwickii" subspecies. 
Vanĕk "et al." (1999) described cranidia from the Middle Cambrian of Skrije - Týřovice area in the Czech Republic as "Plutonides hicksi". Fletcher (2007) however, established a new subgenus, "Paradoxides" ("Mawddachites"), to include "P. hicksii" as type species. Alvarez "et al." (2010) raised "Mawddachites" to a full genus.