There are also feeding, reproductive, and other types of polyps making up the colony. Demonstration of fossil tabulate coral Examine the tabulate coral, Aulopora , growing on the shell of the brachiopod. The synapomorphies for Ctenophora include the possession of ctenes , the eight fused plates of cilia that are responsible for locomotion, and an anal pore . Observe the demonstration of ctenophores. Be able to distinguish between a ctenophore and a cnidarian jelly fish.
Ctenophores have tentacles that have sticky filaments to capture their prey.
Click on the Web images to expand them to screen size. Deuterostomes The next major synapomorphies to evolve unite the protostomes and deuterostomes. Two major lineages evolved, the protostomes and the deuterostomes. Prior to preparation of this slide, the specimen on the slide was fed food material containing a black dye. This serves to stain the digestive tract a dark color so it is more easily identified under the microscope.