By the Carboniferous, all the other major groups of crustaceans are present except for the Eucarida.
'Group' is, of course, a fairly vague concept. The quote above may leave you thinking that there is only one small, obscure group of crustaceans we don't find in Carboniferous rocks. Eucarida is, however, a vast and enormously diverse group. It includes almost every animal the average person would think of when you said 'crustacean' - crabs, lobsters and shrimps are all Eucaridans. And none are ever found in pre-Jurassic rocks, anywhere in the world.