| These skeletal features readily evident in outer part, but in inner part, where numerous excurrent canals occur, structure obscured by recrystallization. |
| The oxygen analyzer monitored and averaged the oxygen content of excurrent air every 60 s and downloaded the data to a computer. |
| Colonies with greater than 12 individuals across, may have fixed water excurrent chimneys reflected in the skeleton. |
| The basic body form of sponges consists of numerous small incurrent canals called ostia and one or more large excurrent opening called oscula. |
| The velocity of the excurrent stream through the osculum may be several hundred times that at the level of the choanocytes. |
| Very similar structures, observed on living sponges of the genus Astrosclera, represent excurrent canal systems. |
