sentences:  A good example for Cenozoic radiolarites are radiolarian clays from Barbados found within the Oceanic Group.The group was deposited in the time range Early Eocene till Middle Miocene on oceanic crust which is subducting now under the island arc of the Lesser Antilles.Younger radiolarites are not known - probably because younger radiolarian oozes didn't have sufficient time to consolidate.