Planiscutellum is a genus of trilobites in the order Corynexochida family Styginidae.

These trilobites were nektobenthic detritivore.

They lived in the Silurian period in the upper Ludlow epoch, from 422.9 ± 1.5 to 418.7 ± 2.8 million years ago.

Silurian of Canada (Quebec, Yukon), the Czech Republic, the United Kingdom; Ordovician to Silurian of Canada (Québec)

This Corynexochida-related article is a stub.