[1] is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and Family Calymenidae.

Flexicalymene specimens can be mistaken for Calymene, Gravicalymene, Diacalymene and a few other Calymenina genera.

Lacks buttress(es) from fixed cheek to lateral glabellar lobe(s).

No distinct crescentic area outside lateral lobe l p. Facial sutures gonatoparian (exceptionally, can be proparian in Flexicalymene).

Hypostome without discrete protuberance on anterior lobe of median body."