Temporal range: Ediacaran - Recent
|"Ciliata" from Ernst Haeckel's Kunstformen der Natur, 1904|
Doflein, 1901 emend.
These are are identical in structure to flagella, but typically shorter and in much larger numbers. They have a different pattern of waving than do flagella.
Cilia occur in all members of the group (although the peculiar suctoria have them only for part of the life-cycle). They are used for swimming, crawling, attachment, feeding, and sensation.