Diacalymene

Diacalymene is a genus of trilobite from the order Phacopida, suborder Calymenina. It includes the species D. clavicula, D. diademata and D. gabrielsi. It lived in the Ordovician and Silurian periods.

Distribution

Fossils of the genus have been found in:
;Ordovician

Cabano, Jupiter and White Head Formations, Quebec, Canada
Dufton Shale, United Kingdom

;Silurian