Milesdavis Lieberman, 1994 Pachyproetus Lutke, 1990 Hedstroemia is a genus of trilobites in the order Proetida known from the Silurian period of Europe, Asia, and North America.

In 1990 the subgenus Pachyproetus was proposed to accommodate a single species, P. pachydermata.

In 1994, the genus Milesdavis was proposed based on incomplete fossils consisting of the pygidium (rear segment) of three individuals.

In 1997, Milesdavis and the subgenus Pachyproetus were recognized as junior synonyms of Hedstroemia, by paleontologist Jonathan Adrain, who regarded the type species of both as ingroup Hedstroemia.

[1] Species names with the authority in parentheses were originally described as a different genus.