Fig. 7

Early developmental stages of Umbellula encrinus colonies from BIOICE program. a Young colony with large oozoid (oo) and incipient autozooids (au). b Young colony with large oozoid, distinct incipient autozooids and siphonozooids (si). c Young colony with large oozoid, and autozooids with different growth rate, one of them with developed tentacles, while the other remains as a distinct mound; siphonozooids are distinct as minute verrucae on the surface of the incipient common distal rachis body joining the bases of large zooids