Peronopsis

and see text for species Peronopsis (meaning "broach-like" or possibly "boot-like"[2]) is a genus of trilobite restricted to the Middle Cambrian.

Its remains have been found in Asia, Australia, Europe, and North America.

[1] The subgenus Svenax is a contraction of Sven Axel, the given names of the paleontologist Tullberg.

Peronopsis palmadon is intermediate between Peronopsidae and Condylopygidae, but it is not clear whether P. palmadon is ancestral to the Condylopigidae, a condylopigid exhibiting regression towards ancestral characters, or an example of parallel evolution.

brachymetopa Zone, Andrarum) and Italy (Gonnesa Formation, Sardinia).

Schematic showing the relationship between the different subgenera of Peronopsis (light green) with other Peronopsid genera (darker green). Unclear is the position of ?Peronopsis palmadon , a transitional form between the agnostoids and the condylopygids .